4 entries under this word
n. [Fr. trépan, Sp. trepano, It. trepano, trapano, L. Lat. trepanum, from Gr. τρύπανον, a borer, auger, from τρυπάω, to bore.] (Surg.) A crown or cylindrical saw for perforating the skull, turned, when used, like a bit or gimlet.
[imp. & p. p. TREPANNED; p. pr. & vb. n. TREPANNING.] [Fr. trépaner, Sp. trepanar, It. trepanare, trepanare. See supra.] To perforate the skull with a trepan, and take out a piece; — a surgical operation for relieving the brain from pressure or irritation.
v. t. [See TRAPAN.] To insnare; to trap; to trapan.
Guards even of a dozen men were silently trepanned from their stations. De Quincey.
n. A snare; a trapan. “The snares and trepans that common life lays in its way.” South.