A small worthless amount:
— You don't know jack.

synonyms: diddley, diddly, diddly-shit, diddly-squat, diddlyshit, diddlysquat, doodly-squat, shit, squat.

Roget 312: rotation, revolution, spinning, gyration, turning about an axis, turning aound an axis, circulation, roll; circumrotation^†, circumvolution, circumgyration^†; volutation^†, circination^†, turbination^†, pirouette, convolution.    verticity^†, whir, whirl, eddy, vortex, whirlpool, gurge^†; countercurrent; Maelstrom, Charybdis; Ixion.    [rotating air] cyclone; tornado, whirlwind; dust devil.    [rotation of an automobile] spin-out.    axis, axis of rotation, swivel, pivot, pivot point; axle, spindle, pin, hinge, pole, arbor, bobbin, mandrel; axle shaft; gymbal; hub, hub of rotation.    [rotation and translation together] helix, helical motion.    [measure of rotation] angular momentum, angular velocity; revolutions per minute, RPM.    [result of rotation] centrifugal force; surge; vertigo, dizzy round; coriolus force.    [things that go around] carousel, merry-go-round; Ferris wheel; top, dreidel^†, teetotum; gyroscope; turntable, lazy suzan; screw, whirligig, rollingstone^†, water wheel, windmill; wheel, pulley wheel, roulette wheel, potter's wheel, pinwheel, gear; roller; flywheel; jack; caster; centrifuge, ultracentrifuge, bench centrifuge, refrigerated centrifuge, gas centrifuge, microfuge; drill, augur, oil rig; wagon wheel, wheel, tire, tyre [Brit.].    [Science of rotary motion] trochilics^†.    [person who rotates] whirling dervish.    ... show more

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

Dutch: schijt
Polish: zero, nic

A man who serves as a sailor.

synonyms: gob, Jack-tar, mariner, old salt, sea dog, seafarer, seaman, tar.

Dutch: matroos, gob, varensman, zeeman, zeevaarder
Polish: marynarz

Someone who works with their hands; someone engaged in manual labor.

synonyms: laborer, labourer, manual laborer.

Dutch: arbeider, handarbeider, loonarbeider, werkman
Polish: pracownik fizyczny, fizyczny

Immense East Indian fruit resembling breadfruit; it contains an edible pulp and nutritious seeds that are commonly roasted.

synonyms: jackfruit, jak.

Polish: jackfruit, dżakfrut

A small ball at which players aim in lawn bowling.

Dutch: stekker
Polish: kitty, jack

An electrical device consisting of a connector socket designed for the insertion of a plug.

Game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks.

synonym: jackstones.

Small flag indicating a ship's nationality.

One of four face cards in a deck bearing a picture of a young prince.

synonym: knave.

Roget 840: amusement, entertainment, recreation, fun, game, fun and games; diversion, divertissement; reaction, solace; pastime, passetemps [Fr.], sport; labor of love; pleasure etc. 827.    relaxation; leisure etc. 685.    fun, frolic, merriment, jollity; joviality, jovialness^†; heyday; laughter etc. 838; jocosity, jocoseness^†; drollery, buffoonery, tomfoolery; mummery, pleasantry; wit etc. 842; quip, quirk.    [verbal expressions of amusement: list] giggle, titter, snigger, snicker, crow, cheer, chuckle, shout; horse laugh, belly laugh, hearty laugh; guffaw; burst of laughter, fit of laughter, shout of laughter, roar of laughter, peal of laughter; cachinnation^†; Kentish fire; tiger.    play; game, game at romps; gambol, romp, prank, antic, rig, lark, spree, skylarking, vagary, monkey trick, gambade, fredaine^†, escapade, echappee [Fr.], bout, espieglerie [Fr.]; practical joke etc. (ridicule) 856.    dance; hop, reel, rigadoon^†, saraband^†, hornpipe, bolero, ballroom dance; [ballroom dances: list], minuet, waltz, polka, fox trot, tango, samba, rhumba, twist, stroll, hustle, cha-cha; fandango, cancan; bayadere^†; breakdown, cake-walk, cornwallis [U.S.], break dancing; nautch-girl; shindig [U.S.]; skirtdance^†, stag dance, Virginia reel, square dance; galop^†, galopade^†; jig, Irish jig, fling, strathspey^†; allemande [Fr.]; gavot^†, gavotte, tarantella; mazurka, morisco^†, morris dance; quadrille; country dance, folk dance; cotillon, Sir Roger de Coverley; ballet etc. (drama) 599; ball; bal, bal masque, bal costume; masquerade; Terpsichore.    festivity, merrymaking; party etc. (social gathering) 892; blowout [U.S.], hullabaloo, hoedown, bat [U.S.], bum [U.S.], bust [Slang], clambake [U.S.], donation party [U.S.], fish fry [U.S.], jamboree [Slang], kantikoy^†, nautch^†, randy, squantum [U.S.], tear [Slang], Turnerfest^†, yule log; fete, festival, gala, ridotto^†; revels, revelry, reveling; carnival, brawl, saturnalia, high jinks; feast, banquet etc. (food) 298; regale, symposium, wassail; carouse, carousal; jollification, junket, wake, Irish wake, picnic, fete champetre [Fr.], regatta, field day; treat.    round of pleasures, dissipation, a short life and a merry one, racketing, holiday making.    rejoicing etc. 838; jubilee etc. (celebration) 883.    bonfire, fireworks, feu-de-joie, firecracker.    holiday; gala day, red letter day, play day; high days and holidays; high holiday, Bank holiday; May day, Derby day; Saint Monday, Easter Monday, Whit Monday; Bairam^†; wayz-goos^†, bean feast; Arbor Day, Declaration Day, Independence Day, Labor Day, Memorial Day, Thanksgiving Day; Mardi gras [Fr.], mi-careme [Fr.], feria [Lat.], fiesta.    place of amusement, theater; hall, concert room, ballroom, assemblyroom^†; music hall.    park, plaisance^†; national park, national forest, state park, county park, city park, vest-pocket park, public park (public) 737.1; arbor; garden etc. (horticulture) 371; pleasure ground, playground, cricketground, croquet ground, archery ground, hunting ground; tennis court, racket court; bowling alley, green alley; croquet lawn, rink, glaciarum^†, skating rink; roundabout, merry-go-round; swing; montagne Russe [Fr.].    game of chance, game of skill.    athletic sports, gymnastics; archery, rifle shooting; tournament, pugilism etc. (contention) 720; sports etc. 622; horse racing, the turf; aquatics etc. 267; skating, sliding; cricket, tennis, lawn tennis; hockey, football, baseball, soccer, ice hockey, basketball; rackets, fives, trap bat and ball, battledore and shuttlecock, la grace; pall-mall, tipcat^†, croquet, golf, curling, pallone^†, polo, water polo; tent pegging; tilting at the ring, quintain [Mediev.]; greasy pole; quoits, horseshoes, discus; rounders, lacrosse; tobogganing, water polo; knurr and spell^†.    [childrens' games] leapfrog, hop skip and jump; mother may I; French and English, tug of war; blindman's bluff, hunt the slopper^†, hide and seek, kiss in the ring; snapdragon; cross questions and crooked answers.   ; crisscross, hopscotch; jacks, jackstones^†, marbles; mumblety-peg, mumble-the-peg, pushball, shinney, shinny, tag &c.; billiards, pool, pingpong, pyramids, bagatelle; bowls, skittles, ninepins, kain^†, American bowls^†; tenpins [U.S.], tivoli.    cards, card games; whist, rubber; round game; loo, cribbage, besique^†, euchre, drole^†, ecarte [Fr.], picquet^†, allfours^†, quadrille, omber, reverse, Pope Joan, commit; boston, boaston^†; blackjack, twenty-one, vingtun [Fr.]; quinze [Fr.], thirty-one, put, speculation, connections, brag, cassino^†, lottery, commerce, snip-snap-snoren^†, lift smoke, blind hookey, Polish bank, Earl of Coventry, Napoleon, patience, pairs; banker; blind poker, draw poker, straight poker, stud poker; bluff, bridge, bridge whist; lotto, monte, three-card monte, nap, penny-ante, poker, reversis^†, squeezers, old maid, fright, beggar-my-neighbor; baccarat.    [cards: list] ace, king, queen, knave, jack, ten, nine, eight, seven, six, five, four, trey, deuce; joker; trump, wild card.    [card suits: list] spades, hearts, clubs, diamonds; major suit, minor suit.    bower; right bower, left bower; dummy; jackpot; deck.    [hands at poker: list] pair, two pair, three of a kind, straight, flush, full-house, four of a kind, royal flush; misere &c.. [board games: list] chess, draughts, checkers, checquers, backgammon, dominos, merelles^†, nine men's morris, go bang, solitaire; game of fox and goose; monopoly; loto &c.; [word games: list], scrabble, scribbage, boggle, crossword puzzle, hangman.    morra^†; gambling etc. (chance) 621.    toy, plaything, bauble; doll etc. (puppet ) 554; teetotum^†; knickknack etc. (trifle) 643; magic lantern etc. (show) 448; peep show, puppet show, raree show, gallanty show^†; toy shop; quips and cranks and wanton wiles, nods and becks quips and cranks and wanton wiles, nods and becks and wreathed smiles" [Milton]. entertainer, showman, showgirl; dancer, tap dancer, song-and-dance man; vaudeville act; singer; musician etc. 416.    sportsman, gamester, reveler; master of ceremonies, master of revels; pompom girl^†; arbiter elegantiarum [Lat.]; arbiter bibendi [Lat.], archer, fan [U.S.], toxophilite^†, turfman^†.    ... show more

Dutch: jekker, boer
Polish: jopek, jop, walet, dupek

Tool for exerting pressure or lifting.

Dutch: autocric, autokrik, cric, dommekracht, krik, vijzel
Polish: dźwignik, podnośnik

Any of several fast-swimming predacious fishes of tropical to warm temperate seas.

Polish: ostrobok

Male donkey.

synonym: jackass.

Dutch: ezel

Lift with a special device:
— Jack up the car so you can change the tire.

synonym: jack up.

Hunt with a jacklight.

synonym: jacklight.