n. A ball of thread, yarn, or cord; also, The thread itself.n. That which guides or directs one in anything of a doubtful or intricate nature; that which gives a hint in the solution of a mystery.n. n. A lower corner of a square sail, or the after corner of a fore-and-aft sail.n. A loop and thimbles at the corner of a sail.n. A combination of lines or nettles by which a hammock is suspended.v. To direct; to guide, as by a thread.v. To move of draw (a sail or yard) by means of the clew garnets, clew lines, etc.; esp. to draw up the clews of a square sail to the yard.