borescope

== English == === Alternative forms === boroscope === Etymology === From bore +‎ -scope. === Noun === borescope (plural borescopes) An optical instrument used for seeing inside tight spaces, consisting of a rigid or flexible tube with an optical relay inside so that the view through a lens or window at one end of the tube may be seen from a lens or eyepiece in the opposite end of the tube. === Verb === borescope (third-person singular simple present borescopes, present participle borescoping, simple past and past participle borescoped) To see inside or examine (something) using a borescope. === See also === endoscope periscope videoscope