dotn.[F., fr. L. dos, dotis, dowry. See Dower, and cf. Dote dowry.] (Law) A marriage portion; dowry.()n.[Cf. AS. dott small spot, speck; of uncertain origin.]1. A small point or spot, made with a pen or other pointed instrument; a speck, or small mark.()2. Anything small and like a speck comparatively; a small portion or specimen; as, a dot of a child.()v. t.1. To mark with dots or small spots; as, to dot a line.()2. To mark or diversify with small detached objects; as, a landscape dotted with cottages.()v. i. To make dots or specks.()prop. n. The United States Department of Transportation.()