trepan

trepan

trepan¹ [trē pan′, tripan′]

n.

[ME trepane < ML trepanum < Gr trypanon, carpenters' tool, auger, trepan < trypan, to bore < IE * treup- < base * ter-, to bore, rub > THROW]

1. an early form of the trephine

2. a heavy boring tool for sinking shafts, quarrying, etc.

vt.

trepanned, trepanning

1. TREPHINE

2. to cut a disk out of (a metal plate, ingot, etc.)

trepanation

n.

trepan² [trē pan′]

n.

[older trapan, prob. < TRAP¹, but infl. by fig. use of TREPAN¹] Archaic

1. a person or thing that tricks, traps, or ensnares

2. a trick; stratagem; trap

vt.

trepanned, trepanning

Archaic to trick, trap, or lure