BLOT (4)

Blot, n. [[Cf. Dan. blot bare, naked, Sw. blott, d. bloot, G. bloss, and perh. E. bloat.]] 1. 1. (Backgammon) (a) An exposure of a single man to be taken up. (b) A single man left on a point, exposed to be taken up.
He is too great a master of his art to make a blot which may be so easily hit. Dryden. 2. 2. A weak point; a failing; an exposed point or mark.