n. A surgical instrument used to remove a circular section of bone from the skull; a trepan.
v. To use a trephine during surgery.
the GNU version of the Collaborative International Dictionary of English
n. 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.
v. To perforate with a trephine; to trepan.
The Century Dictionary and Cyclopedia
n. 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.
To operate upon with a trephine; trepan.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a surgical instrument used to remove sections of bone from the skull
v. operate on with a trephine
Word Usage
"A trephine is a medical saw used to open the skull for surgery or to relieve pressure from brain swelling."