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fin: [noun] an external membranous process of an aquatic animal (such as a fish) used in propelling or guiding the body — see fish illustration.
FIN meaning: 1. a thin vertical part sticking out of the body of especially a fish or an aircraft that helps…. Learn more.
Fin definition: a membranous, winglike or paddlelike organ attached to any of various parts of the body of fishes and certain other aquatic animals, used for propulsion, steering, or balancing..
A fin is a thin component or appendage attached to a larger body or structure. [1] Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids.
FIN definition: 1. a thin vertical part sticking out of the body of especially a fish or an aircraft that helps…. Learn more.
