n. Naut., one of certain ropes made fast to the after-leech of a fore-and-aft sail, and led through blocks on the mast or gaff down to the deck, to assist in taking in the sail; a rope made fast to the head of a jib for a similar purpose.n. In falconry: A piece of leather used to bind up a hawk's wing.n. [⟨ F. brayeul, “the parts or feathers about the Hauks fundament, called by our falconers the brayl in a shortwinged and the pannel in a long-winged hauk” (Cotgrave).] The mass of feathers about a hawk's fundament; the crissum of a falcon.To fasten up (the wings of a bird).Nautical, to haul in by means of the brails: usually followed by up.n. A section of a log-raft, six of which make an average tow.