n. A variant of loof.n. The wooden case in which the light is carried in the sport of lowbelling.n. Nauticaln. The fullest and broadest part of a vessel's bow; the loof.n. The weather-gage, or part of a ship toward the wind.n. The sailing of a ship close to the wind.n. The weather part of a fore-and-aft sail, or the side next the mast or stay to which it is attached.n. A luff-tackle.Naut., to bring the head of (a vessel) nearer to the wind.To steer or come nearer to the wind.n. Lieutenant: as, he is first luff.To lift (the boom of a derrick).