Backsight
Pronunciation : Back"sight`
Part of Speech : n.
Etymology : [Back, adv. + sight. ] (Surv.)
Definition : Defn: The reading of the leveling staff in its unchanged position when the leveling instrument has been taken to a new position; a sight directed backwards to a station previously occupied. Cf. Foresight, n., 3.
Source : Webster's Unabridged Dictionary, 1913