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(), n.[F. trpan (cf. Sp. trpano, 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. Trepan" v. t. & i.[imp. & p. p.Trepanned (); p. pr. & vb. n.Trepanning.] [Cf. F. trpaner. 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. Trepan" 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. Trepan" v. t.To insnare; to trap; to trapan. Guards even of a dozen men were silently trepanned from their stations. De Quincey. スポンサード リンク
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