n (1800) (1) Region where a coat extends over an adjacent fresh coat. The object of the painter is usually to effect a joint between the two coats without showing the lap. v (2) To place one coat of finishing material alongside another, partly extending over it, causing increased thickness where the two coats are present. (3) To overlap or partly cover one surface with another, as in shingling. (4) The length of the overlap, as the distance one tile extends over another.