Definition of Fin

1. Noun. The cardinal number that is the sum of four and one.

Exact synonyms: 5, Cinque, Five, Fivesome, Little Phoebe, Pentad, Phoebe, Quint, Quintet, Quintuplet, V
Generic synonyms: Digit, Figure

2. Verb. Equip (a car) with fins.
Generic synonyms: Equip, Fit, Fit Out, Outfit

3. Noun. One of a pair of decorations projecting above the rear fenders of an automobile.
Exact synonyms: Tail Fin, Tailfin
Group relationships: Auto, Automobile, Car, Machine, Motorcar
Generic synonyms: Decoration, Ornament, Ornamentation

4. Verb. Propel oneself through the water in a finning motion.
Category relationships: Aquatics, Water Sport
Generic synonyms: Swim

5. Noun. One of a set of parallel slats in a door or window to admit air and reject rain.
Exact synonyms: Louver, Louvre
Group relationships: Jalousie
Generic synonyms: Slat, Spline

6. Verb. Show the fins above the water while swimming. "The sharks were finning near the surface"
Exact synonyms: Break Water
Generic synonyms: Swim

7. Noun. A shoe for swimming; the paddle-like front is an aid in swimming (especially underwater).
Exact synonyms: Flipper
Generic synonyms: Shoe
Derivative terms: Flip

8. Noun. A stabilizer on a ship that resembles the fin of a fish.
Group relationships: Ship
Generic synonyms: Stabiliser, Stabilizer
Specialized synonyms: Vane

9. Noun. Organ of locomotion and balance in fishes and some other aquatic animals.
Terms within: Ray
Specialized synonyms: Dorsal Fin, Pectoral Fin, Pelvic Fin, Ventral Fin, Caudal Fin, Tail Fin
Group relationships: Fish
Generic synonyms: Appendage, Extremity, Member

Definition of Fin

1. v. t. To carve or cut up, as a chub.

2. n. End; conclusion; object.

3. n. An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous ossicles, and serving to balance and propel it in the water.

4. n. A fixed stabilizing surface, usually vertical, similar in purpose to a bilge keel on a ship.

Definition of Fin

1. Proper noun. commune in the Somme department in France ¹

2. Noun. (ichthyology) One of the appendages of a fish, used to propel itself and to manoeuvre/maneuver. ¹

3. Noun. A similar appendage of a cetacean or other marine animal. ¹

4. Noun. A thin, rigid component of an aircraft, extending from the fuselage and used to stabilise and steer the aircraft. ¹

5. Noun. A similar structure on the tail of a bomb, used to help keep it on course. ¹

6. Noun. A hairstyle, resembling the fin of a fish, in which the hair is combed and set into a vertical ridge along the top of the head from about the crown to the forehead. ¹

7. Noun. A device worn by divers and swimmers on their feet. ¹

8. Noun. An extending part on a surface of a radiator, engine, heatsink, etc., used to facilitate cooling. ¹

9. Noun. A sharp raised edge (generally in concrete) capable of damaging a roof membrane or vapor retarder. ¹

10. Verb. (transitive) To cut the fins from a fish, shark etc ¹

11. Verb. (intransitive) To swim in the manner of a fish ¹

12. Verb. (transitive) To provide (a motor vehicle etc) with fins ¹

13. Noun. (US slang) A five-dollar bill. ¹

¹ Source:

Definition of Fin

1. to equip with fins (external paddle-like structures) [v FINNED, FINNING, FINS]

Medical Definition of Fin

1. 1. An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous ossicles, and serving to balance and propel it in the water. Fishes move through the water chiefly by means of the caudal fin or tail, the principal office of the other fins being to balance or direct the body, though they are also, to a certain extent, employed in producing motion. 2. A membranous, finlike, swimming organ, as in pteropod and heteropod mollusks. 3. A finlike organ or attachment; a part of an object or product which protrudes like a fin, as: The hand. 4. A finlike appendage, as to submarine boats. Apidose fin. 5. The dorsal, caudal, and anal fins. Origin: OE. Finne, fin, AS. Finn; akin to D. Vin, G. & Dan. Finne, Sw. Fena, L. Pinna, penna, a wing, feather. Cf. Pen a feather. (19 Mar 1998)

Lexicographical Neighbors of Fin

fimbriated fold
fimbriodentate sulcus
fin (current term)
fin de siecle
fin de siècle
fin keel
fin whale
fin whales

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