boresight

See also: bore sight

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.