n.
(
brails)
small ropes that are led from the leech of a fore-and-aft sail to pulleys on the mast for temporarily furling it.
v.
(
brail something up)
furl a sail by hauling on the brails.
Etymology
ME: from OFr. braiel, from med. L. bracale ‘girdle’, from braca ‘breeches’.