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Meaning of trephine

tre•phine

Pronunciation: (tri-fīn', -fēn'), [key]
— n., v., -phined, -phin•ing.
—n.
  1. a small circular saw with a center pin mounted on a strong hollow metal shaft to which is attached a transverse handle: used in surgery to remove circular disks of bone from the skull.
—v.t.
  1. to operate upon with a trephine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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