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 Glassical 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
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