Definitions from Wiktionary (trepan)

▸ noun:  A tool used to bore through rock when sinking shafts.
▸ noun:  (medicine) A surgical instrument used to remove a circular section of bone from the skull; a trephine.
▸ verb:  (transitive, manufacturing, mining) 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.
▸ verb:  (medicine) To use a trepan; to trephine.
▸ noun:  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”) [An act of entrapping or tricking; an entrapment; also, a thing which entraps or tricks; a snare or trap; a stratagem or trick.]
▸ verb:  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”) [To catch or entrap (a person or animal) in a snare or trap; to ensnare, to trap.]

---

▸ Word origin

▸ Words similar to trepan
▸ Usage examples for trepan

▸ Idioms related to trepan
▸ Wikipedia articles (New!)
▸ Popular adjectives describing trepan
▸ Words that often appear near trepan
▸ Rhymes of trepan

▸ Invented words related to trepan