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trepan1

[trih-pan] /trɪˈpæn/
noun
1.
a tool for cutting shallow holes by removing a core.
2.
Surgery. an obsolete form of the trephine resembling a carpenter's bit and brace.
verb (used with object), trepanned, trepanning.
3.
Machinery. to cut circular disks from (plate stock) using a rotating cutter.
4.
Surgery. to operate upon with a trepan; trephine.
Origin
1350-1400
1350-1400; (noun) Middle English trepane < Middle French trepan crown saw < Medieval Latin trepanum < Greek trȳ́panon borer, akin to trŷpa hole, trȳpân to bore; (v) late Middle English trepanen, derivative of the noun
Related forms
trepanation
[trep-uh-ney-shuh n] /ˌtrɛp əˈneɪ ʃən/ (Show IPA),
noun
trepanner, noun

trepan2

[trih-pan] /trɪˈpæn/
noun
1.
a person who ensnares or entraps others.
2.
a stratagem; a trap.
verb (used with object), trepanned, trepanning.
3.
to ensnare or entrap.
4.
to entice.
5.
to cheat or swindle.
Also, trapan.
Origin
1635-45; earlier trapan, equivalent to trap1 + -an < ?
Related forms
trepanation
[trep-uh-ney-shuh n] /ˌtrɛp əˈneɪ ʃən/ (Show IPA),
noun
trepanner, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for trepan
  • It made such a dent in his skull that he had to have a trepan operation, with a silver plate inserted to protect his brain.
  • Eversible pharynx with trepan of varying number of teeth.
British Dictionary definitions for trepan

trepan1

/trɪˈpæn/
noun
1.
(surgery) an instrument resembling a carpenter's brace and bit formerly used to remove circular sections of bone (esp from the skull) Compare trephine
2.
a tool for cutting out circular blanks or for making grooves around a fixed centre
3.
  1. the operation of cutting a hole with such a tool
  2. the hole so produced
verb (transitive) -pans, -panning, -panned
4.
to cut (a hole or groove) with a trepan
5.
(surgery) another word for trephine
Derived Forms
trepanation (ˌtrɛpəˈneɪʃən) noun
trepanner, noun
Word Origin
C14: from Medieval Latin trepanum rotary saw, from Greek trupanon auger, from trupan to bore, from trupa a hole

trepan2

/trɪˈpæn/
verb (transitive) -pans, -panning, -panned
1.
to entice, ensnare, or entrap
2.
to swindle or cheat
noun
3.
a person or thing that traps
Word Origin
C17: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for trepan
v.

c.1400, from French trépaner (14c.), from Medieval Latin trepanum "a saw for cutting out small pieces of bone from the skull," from Greek trypanon, from trypan "to bore," related to trype "hole" (cf. Old Church Slavonic truplu "hollow"), from PIE root *tere- "to rub, turn" (see throw). Related: Trepanned; trepanning.

Online Etymology Dictionary, © 2010 Douglas Harper
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trepan in Medicine

trepan tre·pan (trĭ-pān')
n.
A trephine. v. tre·panned, tre·pan·ning, tre·pans
To trephine.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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8
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