- trepan, trephine - a surgical instrument used to remove sections of bone from the skull
--1 is a kind of surgical instrument
Derived form: verb trephine1
- trephine - operate on with a trephine
--1 is one way to operate on, operate
Sample sentences:Derived forms: noun trephination1, noun trephine1
Somebody ----s something
Somebody ----s somebody