fin (of a surfboard, aircraft, etc.)
Refers to stabilizing or steering fins on equipment such as surfboards, boats, or aircraft.
The fin of the surfboard broke.
The diver put on fins before entering the sea.
He attached a fin to the surfboard to improve stability.
He can swim quickly using fins.
pair; couple; matched set · antithesis; parallel contrast · counter for pairs · counter for sets; counter for matched utensils or furnishings
monofin
tail fin
fin swimming; finswimming
fin stabilizer
Borrowed from English 'fin'.