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trepan |
5 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Trepan \Tre*pan"\, v. t. & i. [imp. & p. p. {Trepanned}; p. pr & vb n. {Trepanning}.] [Cf. F. tr['e]paner. See {Trepan} a saw.] (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. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Trepan \Tre*pan"\, n. [See {Trapan}.] 1. A snare; a trapan. Snares and trepans that common life lays in its way --South. 2. a deceiver; a cheat. He had been from the beginning a spy and a trepan. --Macaulay. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Trepan \Tre*pan"\, n. [F. tr['e]pan (cf. Sp tr['e]pano, It trepano, trapano), LL trepanum fr Gr ? a borer, auger, trepan, fr ? to bore, ? a hole. Cf {Trephine}.] 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. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Trepan \Tre*pan"\, v. t. To insnare; to trap; to trapan. Guards even of a dozen men were silently trepanned from their stations. --De Quincey. From WordNet r 1.6 [wn]: trepan n 1: a surgical instrument used to remove sections of bone from the skull [syn: {trephine}] 2: a tool for cutting circular holes around a center v : cut a hole with a trepan; in surgery
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