Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A surgical instrument with a cylindrical saw usually used for removing a disk of bone, especially from the skull, or for removing corneal tissue.
  • transitive verb To operate on with a trephine.

from The Century Dictionary.

  • To operate upon with a trephine; trepan.
  • noun An improved form of the trepan, consisting of a cylindrical saw with a handle placed transversely, like that of a gimlet, and having a sharp steel point called the center-pin.

from the GNU version of the Collaborative International Dictionary of English.

  • transitive verb To perforate with a trephine; to trepan.
  • noun (Surg.) An instrument for trepanning, being an improvement on the trepan. It is a circular or cylindrical saw, with a handle like that of a gimlet, and a little sharp perforator called the center pin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun medicine A surgical instrument used to remove a circular section of bone from the skull; a trepan.
  • verb To use a trephine during surgery.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a surgical instrument used to remove sections of bone from the skull
  • verb operate on with a trephine

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[French tréphine, from obsolete English trefine, from Latin trēs fīnēs, three ends : trēs, three; see trei- in Indo-European roots + fīnēs, pl. of fīnis, end.]

Examples

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