Third-person singular simple present indicative form of sail.(verb)
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Use "sails" in a sentence
"The reason why shipping went away from sails is because the winds at sea level are not strong enough to effeciently power the large vessels we now build."
"He chiseled a boat out of colby and cheddar, and sliced thin sails of provolone to the masts."
"And the ship that bears his name sails into this young century as a symbol of American strength and freedom."