n. | 1. | (Surg.) A crown-saw or cylindrical saw for perforating the skull, turned, when used, like a bit or gimlet. See Trephine. |
2. | (Mining) A kind of broad chisel for sinking shafts. | |
v. t. & i. | 1. | (Surg.) To perforate (the skull) with a trepan, so as to remove a portion of the bone, and thus relieve the brain from pressure or irritation; to perform an operation with the trepan. |
n. | 1. | A snare; a trapan. |
2. | a deceiver; a cheat. | |
v. t. | 1. | To insnare; to trap; to trapan. |
Noun | 1. | trepan - a surgical instrument used to remove sections of bone from the skull Synonyms: trephine |
2. | trepan - a drill for cutting circular holes around a center | |
Verb | 1. | trepan - cut a hole with a trepan, as in surgery |