tre·pan /trɪˈpæn/
環鋸,鑽孔機(vt.)用環鋸行手術,誘入圈套,欺騙
Tre·pan n.
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.
Tre·pan, v. t. & i. [imp. & p. p. Trepanned p. pr. & vb. n. Trepanning.] 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.
Tre·pan, n.
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.
Tre·pan, v. t. To insnare; to trap; to trapan.
Guards even of a dozen men were silently trepanned from their stations. --De Quincey.
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trepan
n 1: a surgical instrument used to remove sections of bone from
the skull [syn: trephine]
2: a drill for cutting circular holes around a center
v : cut a hole with a trepan, as in surgery
[also: trepanning, trepanned]