boresight

== English == === Etymology === From bore +‎ sight. === Noun === boresight (plural boresights) The optical axis of a directional antenna. (firearms, weaponry) A device mounted along the bore axis of a gun barrel for purposes of aligning the barrel with the gun's sights. === Verb === boresight (third-person singular simple present boresights, present participle boresighting, simple past and past participle boresighted) (firearms, weaponry) To use a boresight to align a gun barrel with the gun's sights. === See also === Antenna boresight on Wikipedia.Wikipedia Boresight (firearm) on Wikipedia.Wikipedia