Category:Trephine

Tre*phine", n. Etym: [a dim. of 1st trepan: cf. F. tréphine.] (surg.)

Defn: an instrument for trepanning, being an improvement on the Trepan. It is a circular or cylindrical saw, with a handle like that Of a gimlet, and a little sharp perforator called the center pin.

Trephine Tre*phine", v. t. [imp. & p. p. Trephined; p. pr. & vb. n. Trephining.]

Defn: to perforate with a trephine; to trepan.