TREPAN
- to trephine (to operate on with a surgical saw) [v TREPANNED, TREPANNING, TREPANS]
- tool for cutting shallow holes by removing a core
- obsolete form of the trephine resembling a carpenter's bit and brace
- to cut circular disks from (plate stock) using a rotating cutter
- to operate on with a surgical saw, also TRAPAN, TREPHINE [v TREPANNED, TREPANNING, TREPANS]
- to operate upon with a trepan; trephine
- to use a trephine on (the skull)
- remove a disk or cylindrical core (as from metal for testing)