fin

/fˈɪn/

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Definitions

Noun
the cardinal number that is the sum of four and one
Noun
one of a pair of decorations projecting above the rear fenders of an automobile
Noun
one of a set of parallel slats in a door or window to admit air and reject rain
Noun
a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater)
Noun
a stabilizer on a ship that resembles the fin of a fish
Noun
organ of locomotion and balance in fishes and some other aquatic animals
Verb
equip (a car) with fins
Verb
propel oneself through the water in a finning motion
Verb
show the fins above the water while swimming; "The sharks were finning near the surface"