FIN

Definition

1. verb equip (a car) with fins.
2. verb propel oneself through the water in a finning motion.
3. verb show the fins above the water while swimming. — synonyms: break_water
4. noun the cardinal number that is the sum of four and one. — synonyms: five, 5, V, cinque, quint, quintet, fivesome, quintuplet
5. noun one of a pair of decorations projecting above the rear fenders of an automobile. — synonyms: tail_fin, tailfin
6. noun one of a set of parallel slats in a door or window to admit air and reject rain. — synonyms: louver, louvre
7. noun a shoe for swimming. — synonyms: flipper
8. noun a stabilizer on a ship that resembles the fin of a fish.
9. noun organ of locomotion and balance in fishes and some other aquatic animals.