Luff n. (Naut.) (a)The side of a ship toward the wind.
(b)The act of sailing a ship close to the wind.
(c)The roundest part of a ship's bow.
(d)The forward or weather leech of a sail, especially of the jib, spanker, and other fore-and-aft sails.
Luff tackle, a purchase composed of a double and single block and fall, used for various purposes.
Luff upon luff, a luff tackle attached to the fall of another luff tackle.
