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Noun: trepan  tri'pan
  1. A surgical instrument used to remove sections of bone from the skull
    - trephine
     
  2. A drill for cutting circular holes around a centre
Verb: trepan (trepanned,trepanning)  tri'pan
  1. Cut a hole with a trepan, as in surgery

Derived forms: trepans, trepanned, trepanning

Type of: bore, drill, surgical instrument

Encyclopedia: Trepan