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backsight |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Backsight \Back"sight`\, n. [Back, adv + sight. ] (Surv.) 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.