trepan

Meanings

1. A tool used to bore through rock when sinking shafts.
2. A surgical instrument used to remove a circular section of bone from the skull; a trephine.

1. To create a large hole by making a narrow groove outlining the shape of the hole and then removing the plug of material remaining by less expensive means.
2. To use a trepan; to trephine.

1. Alternative spelling of trapan (“act of entrapping or tricking; thing which entraps or tricks; (archaic or obsolete) person (or occasionally an animal) that traps or tricks another into doing something that benefits them but harms the victim”)

1. Alternative spelling of trapan (“to catch or entrap (a person or animal) in a snare or trap; (figurative) to trap or trick (someone), especially by using some stratagem, into doing something that benefits the perpetrator but harms the victim”)

Etymology

Borrowed into Middle English from Old French trepan, from Latin trepanum, from Ancient Greek τρύπανον (trúpanon, “auger, borer”). Doublet of trephine.