'Sighting' definitions:

Definition of 'sighting'

From: WordNet
noun
The act of observing; "several sightings of enemy troops were reported"

Definition of 'Sighting'

From: GCIDE
  • Sight \Sight\, v. t. [imp. & p. p. Sighted; p. pr. & vb. n. Sighting.]
  • 1. To get sight of; to see; as, to sight land; to sight a wreck. --Kane. [1913 Webster]
  • 2. To look at through a sight; to see accurately; as, to sight an object, as a star. [1913 Webster]
  • 3. To apply sights to; to adjust the sights of; also, to give the proper elevation and direction to by means of a sight; as, to sight a rifle or a cannon. [1913 Webster]

Definition of 'Sighting'

From: GCIDE
  • Sighting \Sight"ing\, a. & n. from Sight, v. t. [1913 Webster]
  • Sighting shot, a shot made to ascertain whether the sights of a firearm are properly adjusted; a trial shot. [1913 Webster]