lateen sail n. (Naut.) A triangular sail, extended by a long yard, which is slung at about one fourth of its length from the lower end, to a low mast, this end being brought down at the tack, while the other end is elevated at an angle or about forty-five degrees; used in small boats, feluccas, xebecs, etc., especially in the Mediterranean and adjacent waters. Some lateen sails have also a boom on the lower side.
... on board the junk they were hauling the boat in, shaking out the lateen sail and dragging up the anchor as though a hundred pair of hands were at work instead ... — Great Sea Stories • Various
... the last century, in very old ships, there was no sail hung on this lower yard of the mizzenmast, it having been introduced only for setting the mizzen topsail; and instead of the gaff spanker we now have there was a huge lateen sail which extended some distance forward of the mast and ... — Golden Days for Boys and Girls, Vol. XIII, Nov. 28, 1891 • Various