Open English Wordnet
Nouns
(n)five, 5, V, cinque, quint, quintet, fivesome, quintuplet, pentad, fin, Phoebe, Little Phoebethe cardinal number that is the sum of four and one (n)tail fin, tailfin, finone of a pair of decorations projecting above the rear fenders of an automobile (n)louver, louvre, finone of a set of parallel slats in a door or window to admit air and reject rain (n)flipper, fina shoe for swimming; the paddle-like front is an aid in swimming (especially underwater) (n)fina stabilizer on a ship that resembles the fin of a fish (n)finorgan of locomotion and balance in fishes and some other aquatic animals Verbs
(v)finequip (a car) with fins (v)finpropel oneself through the water in a finning motion (v)fin, break watershow the fins above the water while swimming“The sharks were finning near the surface”