English

sail noun definition in Parts of boats and ships topic from the Oxford Advanced Learner's Dictionary

sail

 noun: Parts of boats and ships topic
[countable, uncountable] a sheet of strong cloth which the wind blows against to make a boat or ship travel through the water As the boat moved down the river the wind began to fill the sails. a ship under sail (= using sails) in the days of sail (= when ships all used sails) She moved away like a ship in full sail (= with all its sails spread out). The vessel can be propelled by oars or sail (= sails).