Tre*pan" (?), n. [F. trépan
(cf. Sp. trépano, 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.
Tre*pan", v. t. & i. [imp. & p.
p. Trepanned (?); p. pr. & vb. n.
Trepanning.] [Cf. F. trépaner. 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.
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.
Tre*pan", v. t. To insnare; to trap; to
trapan.
Guards even of a dozen men were silently trepanned
from their stations.
De Quincey.
Tre*pan" (?), n. [F. trépan
(cf. Sp. trépano, 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.
Tre*pan", v. t. & i. [imp. & p.
p. Trepanned (?); p. pr. & vb. n.
Trepanning.] [Cf. F. trépaner. 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.
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.
Tre*pan", v. t. To insnare; to trap; to
trapan.
Guards even of a dozen men were silently trepanned
from their stations.
De Quincey.
