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borescope

[bawr-skohp, bohr-] /ˈbɔrˌskoʊp, ˈboʊr-/
noun, Optics.
1.
an instrument using optical fibers for the visual inspection of narrow cavities, as the bore of a gun.
Origin of borescope
1955-1960
1955-60; bore2+ -scope
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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