also tops'l noun Date: 14th century the sail next above the lowermost sail on a mast in a square-rigged ship, the sail set above and sometimes on the gaff in a fore-and-aft rigged ship
TOPSAIL
Meaning of TOPSAIL in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012