- (nautical) The vertical edge of a sail that is closest to the direction of the wind.
- By easing the halyard the of the sail sagged to leeward.
- (context, nautical, of a sail, intransitive) To shake due to being trimmed improperly.
- (context, nautical, of a boat, intransitive) To alter course to windward so that the sails luff. (Alternatively luff up)
- (context, nautical, transitive) to let out a sail so that it luffs.
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Full Definition of luff