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trepan n. 環鋸,鉆孔機
vt. 用環鋸行手術,誘入圈套,欺騙 環鋸,鑽孔機用環鋸行手術,誘入圈套,欺騙 trepan n 1: a surgical instrument used to remove sections of bone from the skull [ synonym: { trepan}, { trephine}] 2: a drill for cutting circular holes around a center v 1: cut a hole with a trepan, as in surgeryTrepan \ 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}. [ 1913 Webster] 2. ( Mining) A kind of broad chisel for sinking shafts. [ 1913 Webster]
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. [ 1913 Webster]
Trepan \ Tre* pan"\, n. [ See { Trapan}.] 1. A snare; a trapan. [ 1913 Webster] Snares and trepans that common life lays in its way. -- South. [ 1913 Webster] 2. a deceiver; a cheat. [ 1913 Webster] He had been from the beginning a spy and a trepan. -- Macaulay. [ 1913 Webster]
Trepan \ Tre* pan"\, v. t. To insnare; to trap; to trapan. [ 1913 Webster] Guards even of a dozen men were silently trepanned from their stations. -- De Quincey. [ 1913 Webster]
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