1. a surgical instrument with a circular cutting edge used to remove a circular section of bone from the skull
Usage: medical

1. to operate on with a trephine; to cut a hole in the skull using a trephine
Usage: medical

Examples

• The surgeon carefully selected the appropriate trephine for the procedure.
• Ancient civilizations used primitive trephines to perform skull surgery.
• The doctor will trephine the patient’s skull to relieve pressure on the brain.
• Archaeological evidence shows that people were trephined thousands of years ago.
• The trephine left a perfectly circular hole in the bone.
• Modern trephines are much more precise than their ancient counterparts.