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Noun: trephine  tri'fIn
  1. A surgical instrument used to remove sections of bone from the skull
    "The neurosurgeon used a trephine during the delicate brain surgery";
    - trepan
Verb: trephine  tri'fIn
  1. Operate on with a trephine
    "The surgeon trephined the patient's skull to relieve pressure"

Derived forms: trephined, trephines, trephining

Type of: operate, operate on, surgical instrument

Encyclopedia: Trephine