Organe extérieur des poissons, et, par ext. et improprement, des animaux marins, qui leur sert ŕ nager.
1. A stabilizer that resembles the fins of a fish.
2. Organ of locomotion and balance in fishes and some other aquatic animals.
1. Paddle-like front is an aid in swimming (especially underwater); SYN. flippers, fin, fins.
2. The flat broad limb of aquatic animals specialized for swimming.