Pronunciation: (bō'lin, -līn"),[key] —n. 1. Also called bow'line knot". a knot used to make a nonslipping loop on the end of a rope. See illus. under knot. 2. Naut.a rope made fast to the weather leech of a square sail, for keeping the sail as flat as possible when close-hauled.
3. on a bowline,Naut.sailing close-hauled.
4. on an easy bowline,Naut.close-hauled with sails well filled.