"luff" in the noun sense
nautical) the forward edge of a fore-and-aft sail that is next to the mast
the act of sailing close to the wind
"luff" in the verb sense
1. luff, point
sail close to the wind
flap when the wind is blowing equally on both sides
"the sails luffed"
Source: WordNet® (An amazing lexical database of English)
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