La-teen'-sāil, n.

n. [Fr. voile latine, a sail in the shape of a right-angled triangle. See LATIN.] (Naut.) A triangular sail, extended by a long yard, which is slung about one quarter the distance from the lower end, which is brought down at the tack, while the other end is elevated at an angle of about forty-five degrees; — used in small boats, feluccas, xebecs, &c., especially in the Mediterranean and adjacent waters.