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tre·pan

trepan

 
pronunciation:
trih paen
parts of speech:
noun, transitive verb
part of speech: noun
definition 1: a heavy tool for drilling holes, esp. in rock.
definition 2: an earlier form of a trephine, used to remove disks of bone, esp. from the skull.
 
part of speech: transitive verb
inflections: trepans, trepanning, trepanned
definition: to remove a circular section of; drill or cut with a trepan.
similar words:
bore
derivations: trepanation (n.), trepanner (n.)