Variant of trepan
- an early form of the trephine
- a heavy boring tool for sinking shafts, quarrying, etc.
Origin: Middle English trepane ; from Midieval Latin trepanum ; from Classical Greek trypanon, carpenters' tool, auger, trepan ; from trypan, to bore ; from Indo-European an unverified form treup- ; from base an unverified form ter-, to bore, rub from source throw
- trepanation noun