A surgical instrument used to remove sections of bone from the skull.

synonym: trephine.

Roget 262: perforator, piercer, borer, auger, chisel, gimlet, stylet^†, drill, wimble^†, awl, bradawl, scoop, terrier, corkscrew, dibble, trocar [Med.], trepan, probe, bodkin, needle, stiletto, rimer, warder, lancet; punch, puncheon; spikebit^†, gouge; spear etc. (weapon) 727; puncher; punching machine, punching press; punch pliers.    ... show more

Dutch: schedelboor, trepaan
Polish: trepan

A drill for cutting circular holes around a center.

Cut a hole with a trepan, as in surgery.

Roget 545: deceive, take in; defraud, cheat, jockey, do, cozen, diddle, nab, chouse, play one false, bilk, cully^†, jilt, bite, pluck, swindle, victimize; abuse; mystify; blind one's eyes; blindfold, hoodwink; throw dust into the eyes; dupe, gull, hoax, fool, befool^†, bamboozle, flimflam, hornswoggle; trick.    impose upon, practice upon, play upon, put upon, palm off on, palm upon, foist upon; snatch a verdict; bluff off, bluff; bunko, four flush [Slang], gum [U.S.], spoof [Slang], stuff (a ballot box) [U.S.].    circumvent, overreach; outreach, out wit, out maneuver; steal a march upon, give the go-by, to leave in the lurch decoy, waylay, lure, beguile, delude, inveigle; entrap, intrap^†, ensnare; nick, springe^†; set a trap, lay a trap, lay a snare for; bait the hook, forelay^†, spread the toils, lime; trapan^†, trepan; kidnap; let in, hook in; nousle^†, nousel^†; blind a trail; enmesh, immesh^†; shanghai; catch, catch in a trap; sniggle, entangle, illaqueate^†, hocus, escamoter^†, practice on one's credulity; hum, humbug; gammon, stuff up [Slang], sell; play a trick upon one, play a practical joke upon one, put something over on one, put one over on; balk, trip up, throw a tub to a whale; fool to the top of one's bent, send on a fool's errand; make game, make a fool of, make an April fool of^†, make an ass of; trifle with, cajole, flatter; come over etc. (influence) 615; gild the pill, make things pleasant, divert, put a good face upon; dissemble etc. 544.    cog, cog the dice, load the dice, stack the deck; live by one's wits, play at hide and seek; obtain money under false pretenses etc. (steal) 791; conjure, juggle, practice chicanery; deacon [U.S.].    play off, palm off, foist off, fob-off.    lie etc. 544; misinform etc. 538; mislead etc. (error) 495; betray etc. 940; be deceived etc. 547.    ... show more