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plural genoas
(nautical) A staysail that resembles a jib but extends aft beyond the mast. quotations examples
The more the backstay is tightened, the less the headstay will sag off to leeward, forming a rigid and more efficient arc along the luff of the genoa while beating to weather.
1982 January, Jerry Cartwright, “Cruising Seamanship”, in Motorboating & Sailing, volume 149, number 2, page 23