Metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated.

Roget 550: indication; symbolism, symbolization; semiology, semiotics, semeiology^†, semeiotics^†; Zeitgeist.    [means of recognition: property] characteristic, diagnostic; lineament, feature, trait; fingerprint, voiceprint, footprint, noseprint [for animals]; cloven hoof; footfall; recognition (memory) 505.    [means of recognition: tool] diagnostic, divining rod; detector.    sign, symbol; index, indice^†, indicator; point, pointer; exponent, note, token, symptom; dollar sign, dollar mark.    type, figure, emblem, cipher, device; representation etc. 554; epigraph, motto, posy.    gesture, gesticulation; pantomime; wink, glance, leer; nod, shrug, beck; touch, nudge; dactylology^†, dactylonomy^†; freemasonry, telegraphy, chirology [Med.], byplay, dumb show; cue; hint etc. 527; clue, clew, key, scent.    signal, signal post; rocket, blue light; watch fire, watch tower; telegraph, semaphore, flagstaff; cresset^†, fiery cross; calumet; heliograph; guidon; headlight.    [sign (evidence) on physobj of contact with another physobj] mark, scratch, line, stroke, dash, score, stripe, streak, tick, dot, point, notch, nick.    print; imprint, impress, impression.    [symbols accompanying written text to signify modified interpretation] keyboard symbols, printing symbols; [Symbols for emphasis], red letter, italics, sublineation^†, underlining, bold font; jotting; note, annotation, reference; blaze, cedilla, guillemets^†, hachure [Topo.]; [Special Characters list], quotation marks, "; double quotes, " "; parentheses, "( )"; brackets, "[ ]"; braces, "{ }", curly brackets; arrows, slashes; left parenthesis, "("; right parenthesis, ")"; opening bracket, "["; closing bracket, "]"; left curly brace, "{"; right curly brace, "}"; left arrow, ""; forward slash, "/"; backward slash, "\\"; exclamation point, "!"; commercial at, "@"; pound sign, "#"; percent sign, "%"; carat, "^"; ampersand, "&"; asterisk, "*"; hyphen, "-"; dash, "-", "_"; em dash, "--"; plus sign, "+"; equals sign, "="; question mark, "?"; period, "."; semicolon, ";"; colon, ":"; comma, ","; apostrophe, "'"; single quote, "'"; tilde, "~". [For identification: general] badge, criterion; countercheck^†, countermark^†, countersign, counterfoil; duplicate, tally; label, ticket, billet, letter, counter, check, chip, chop; dib^†; totem; tessera^†, card, bill; witness, voucher; stamp; cacher [Fr.]; trade mark, Hall mark.    [For identification of people, on a document] signature, mark, autograph, autography; attestation; hand, hand writing, sign manual; cipher; seal, sigil [Lat.], signet, hand and seal [Law]; paraph^†, brand; superscription; indorsement^†, endorsement.    [For identification of people, to gain access to restricted (locations or information)] password, watchword, catchword; security card, pass, passkey; credentials etc. (evidence) 467; open sesame; timbrology^†; mot de passe [Fr.], mot du guet [Fr.]; pass-parole; shibboleth.    title, heading, docket.    address card, visiting card; carte de visite [Fr.].    insignia; banner, banneret^†, bannerol^†; bandrol^†; flag, colors, streamer, standard, eagle, labarum^†, oriflamb^†, oriflamme; figurehead; ensign; pennon, pennant, pendant; burgee^†, blue Peter, jack, ancient, gonfalon, union jack; banderole, old glory [U.S.], quarantine flag; vexillum^†; yellow-flag, yellow jack; tricolor, stars and stripes; bunting.    heraldry, crest; coat of arms, arms; armorial bearings, hatchment^†; escutcheon, scutcheon; shield, supporters; livery, uniform; cockade, epaulet, chevron; garland, love knot, favor.    [Of locality] beacon, cairn, post, staff, flagstaff, hand, pointer, vane, cock, weathercock; guidepost, handpost^†, fingerpost^†, directing post, signpost; pillars of Hercules, pharos; bale-fire, beacon-fire; l'etoile du Nord [Fr.]; landmark, seamark; lighthouse, balize^†; polestar, loadstar^†, lodestar; cynosure, guide; address, direction, name; sign, signboard.    [Of the future] warning etc. 668; omen etc. 512; prefigurement etc. 511.    [Of the past] trace, record &c., 551.    [Of danger] warning etc. 668, alarm etc. 669.    [of authority]. scepter etc. 747.    [of triumph]. trophy etc. 733.    [of quantity]. gauge etc. 466.    [Of Distance] milestone, milepost.    [Of disgrace], brand, fool's cap.    [For detection], check, telltale; test etc. (experiment) 463; mileage ticket; milliary^†.    notification etc. (information) 527; advertisement etc. (publication) 531.    word of command, call; bugle call, trumpet call; bell, alarum, cry; battle cry, rallying cry; angelus^†; reveille; sacring bell^†, sanctus bell [Lat.].    exposition etc. (explanation) 522, proof etc. (evidence) 463; pattern etc. (prototype) 22.    ... show more

Roget 522: interpretation, definition; explanation, explication; solution, answer; rationale; plain interpretation, simple interpretation, strict interpretation; meaning etc. 516.    translation; rendering, rendition; redition^†; literal translation, free translation; key; secret; clew etc. (indication) 550; clavis^†, crib, pony, trot [U.S.].    exegesis; expounding, exposition; hermeneutics; comment, commentary; inference etc. (deduction) 480; illustration, exemplification; gloss, annotation, scholium^†, note; elucidation, dilucidation^†; eclaircissement [Fr.], mot d'enigme [Fr.].    [methods of interpreting - list] symptomatology [Med.], semiology, semeiology^†, semiotics; metoposcopy^†, physiognomy; paleography etc. (philology) 560; oneirology acception^†, acceptation, acceptance; light, reading, lection, construction, version.    equivalent, equivalent meaning etc. 516; synonym; paraphrase, metaphrase^†; convertible terms, apposition; dictionary etc. 562; polyglot.    ... show more

Roget 747: scepter, regalia, caduceus; Mercury's rod, Mercury's staff, Mercury's wand; rod of empire, mace, fasces^†, wand; staff, staff of office; baton, truncheon; flag etc. (insignia) 550; ensign of authority, emblem of authority, badge of authority, insignia of authority.    throne, chair, musnud^†, divan, dais, woolsack^†.    toga, pall, mantle, robes of state, ermine, purple.    crown, coronet, diadem, tiara, cap of maintenance; decoration; title etc. 877; portfolio.    key, signet, seals, talisman; helm; reins etc. (means of restraint) 752.    ... show more

Roget 633: machinery, mechanism, engineering.    instrument, organ, tool, implement, utensil, machine, engine, lathe, gin, mill; air engine, caloric engine, heat engine.    gear; tackle, tackling, rig, rigging, apparatus, appliances; plant, materiel; harness, trappings, fittings, accouterments; barde^†; equipment, equipmentage^†; appointments, furniture, upholstery; chattels; paraphernalia etc. (belongings) 780.    mechanical powers; lever, leverage; mechanical advantage; crow, crowbar; handspike^†, gavelock^†, jemmy^†, jimmy, arm, limb, wing; oar, paddle; pulley; wheel and axle; wheelwork, clockwork; wheels within wheels; pinion, crank, winch; cam; pedal; capstan etc. (lift) 307; wheel etc. (rotation) 312; inclined plane; wedge; screw; spring, mainspring; can hook, glut, heald^†, heddle^†, jenny, parbuckle^†, sprag^†, water wheel.    handle, hilt, haft, shaft, heft, shank, blade, trigger, tiller, helm, treadle, key; turnscrew, screwdriver; knocker.    hammer etc. (impulse) 276; edge tool etc. (cut) 253; borer etc. 262; vice, teeth, etc. (hold) 781; nail, rope etc. (join) 45; peg etc. (hang) 214; support etc. 215; spoon etc. (vehicle) 272; arms etc. 727; oar etc. (navigation) 267; cardiograph, recapper^†, snowplow, tenpenny^†, votograph^†.    ... show more

Roget 153: cause, origin, source, principle, element; occasioner^†, prime mover, primum mobile [Lat.]; vera causa [Lat.]; author etc. (producer) 164; mainspring; agent; leaven; groundwork, foundation etc. (support) 215.    spring, fountain, well, font; fountainhead, spring head, wellhead; fons et origo [Lat.], genesis; descent etc. (paternity) 166; remote cause; influence.    pivot, hinge, turning point, lever, crux, fulcrum; key; proximate cause, causa causans [Lat.]; straw that breaks the camel's back.    ground; reason, reason why; why and wherefore, rationale, occasion, derivation; final cause etc. (intention) 620; les dessous des cartes [Fr.]; undercurrents.    rudiment.    egg, germ, embryo, bud, root, radix radical, etymon, nucleus, seed, stem, stock, stirps, trunk, tap-root, gemmule^†, radicle, semen, sperm.    nest, cradle, nursery, womb, nidus, birthplace, hotbed.    causality, causation; origination; production etc. 161.    ... show more

Roget 260: hole, foramen; puncture, perforation; fontanel^†; transforation^†; pinhole, keyhole, loophole, porthole, peephole, mousehole, pigeonhole; eye of a needle; eyelet; slot.    opening; aperture, apertness^†; hiation^†, yawning, oscitancy^†, dehiscence, patefaction^†, pandiculation^†; chasm etc. (interval) 198.    embrasure, window, casement; abatjour^†; light; sky light, fan light; lattice; bay window, bow window; oriel [Arch.]; dormer, lantern.    outlet, inlet; vent, vomitory; embouchure; orifice, mouth, sucker, muzzle, throat, gullet, weasand^†, wizen, nozzle; placket.    portal, porch, gate, ostiary^†, postern, wicket, trapdoor, hatch, door; arcade; cellarway^†, driveway, gateway, doorway, hatchway, gangway; lich gate^†.    way, path etc. 627; thoroughfare; channel; passage, passageway; tube, pipe; water pipe etc. 350; air pipe etc. 351; vessel, tubule, canal, gut, fistula; adjutage^†, ajutage^†; ostium^†; smokestack; chimney, flue, tap, funnel, gully, tunnel, main; mine, pit, adit^†, shaft; gallery.    alley, aisle, glade, vista.    bore, caliber; pore; blind orifice; fulgurite^†, thundertube^†.    porousness, porosity.    sieve, cullender^†, colander; cribble^†, riddle, screen; honeycomb.    apertion^†, perforation; piercing etc. v.; terebration^†, empalement^†, pertusion^†, puncture, acupuncture, penetration.    key etc. 631, opener, master key, password, combination, passe-partout.    ... show more

Roget 631: instrumentality; aid etc. 707; subservience, subserviency; mediation, intervention, medium, intermedium^†, vehicle, hand; agency etc. 170.    minister, handmaid; midwife, accoucheur [Fr.], accoucheuse [Fr.], obstetrician; gobetween; cat's-paw; stepping-stone.    opener etc. 260; key; master key, passkey, latchkey; open sesame;" passport, passe-partout, safe-conduct, password.    instrument etc. 633; expedient etc. (plan) 626; means etc. 632.    ... show more

Dutch: sleutel, toets
Polish: klucz

Something crucial for explaining.

Polish: klucz

Pitch of the voice.

Any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music.

synonym: tonality.

Roget 413: melody, rhythm, measure; rhyme etc. (poetry) 597.    pitch, timbre, intonation, tone.    scale, gamut; diapason; diatonic chromatic scale^†, enharmonic scale^†; key, clef, chords.    modulation, temperament, syncope, syncopation, preparation, suspension, resolution.    staff, stave, line, space, brace; bar, rest; appoggiato^†, appoggiatura^†; acciaccatura^†.    note, musical note, notes of a scale; sharp, flat, natural; high note etc. (shrillness) 410; low note etc. 408; interval; semitone; second, third, fourth &c.; diatessaron^†.    breve, semibreve [Mus.], minim, crotchet, quaver; semiquaver, demisemiquaver, hemidemisemiquaver; sustained note, drone, burden.    tonic; key note, leading note, fundamental note; supertonic^†, mediant^†, dominant; submediant^†, subdominant^†; octave, tetrachord^†; major key, minor key, major scale, minor scale, major mode, minor mode; passage, phrase.    concord, harmony; emmeleia^†; unison, unisonance^†; chime, homophony; euphony, euphonism^†; tonality; consonance; consent; part.    [Science of harmony] harmony, harmonics; thorough-bass, fundamental-bass; counterpoint; faburden^†.    piece of music etc. 415 [Fr.]; composer, harmonist^†, contrapuntist (musician) 416.    ... show more

Dutch: tonaliteit
Polish: tonalność

A kilogram of a narcotic drug.

A winged often one-seed indehiscent fruit as of the ash or elm or maple.

synonyms: key fruit, samara.

Polish: skrzydlak

United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812; the poem was later set to music and entitled `The Star-Spangled Banner' (1779-1843).

synonym: Francis Scott Key.

A coral reef off the southern coast of Florida.

synonyms: cay, Florida key.

basketball A space (including the foul line) in front of the basket at each end of a basketball court; usually painted a different color from the rest of the court:
— He hit a jump shot from the top of the key.

synonym: paint.

Roget 428: color, hue, tint, tinge, dye, complexion, shade, tincture, cast, livery, coloration, glow, flush; tone, key.    pure color, positive color, primary color, primitive complementary color; three primaries; spectrum, chromatic dispersion; broken color, secondary color, tertiary color.    local color, coloring, keeping, tone, value, aerial perspective.    [Science of color] chromatics, spectrum analysis, spectroscopy; chromatism^†, chromatography^†, chromatology^†.    [instruments to measure color] prism, spectroscope, spectrograph, spectrometer, colorimeter (optical instruments) 445.    pigment, coloring matter, paint, dye, wash, distemper, stain; medium; mordant; oil paint etc. (painting) 556.    ... show more

Dutch: tjet

A list of answers to a test.

Polish: klucz

A list of words or phrases that explain symbols or abbreviations.

Polish: klucz

A generic term for any device whose possession entitles the holder to a means of access.

Mechanical device used to wind another device that is driven by a spring (as a clock).

synonym: winder.

Dutch: sleutel, pijpsleutel

The central building block at the top of an arch or vault.

synonyms: headstone, keystone.

Dutch: sluitstuk, roos, slotstuk, sluitsteen
Polish: klucz, zwornik

A lever (as in a keyboard) that actuates a mechanism when depressed.

Dutch: toets, toetsen
Polish: klawisz

Identify as in botany or biology, for example.

synonyms: describe, discover, distinguish, identify, key out, name.

Provide with a key.

Vandalize a car by scratching the sides with a key.

Regulate the musical pitch of.

Harmonize with or adjust to.

Serving as an essential component.

synonyms: cardinal, central, fundamental, primal.

Polish: wytyczny, bazowy, rdzenny, centralny, główny