fin

fin 1  (fn) n. 1. A membranous appendage extending from the body of a fish or other aquatic animal, used for propelling, steering, or balancing the body in the water. 2. Something resembling a fin in shape or function, as: a. A fixed or movable airfoil used to stabilize an aircraft, missile, or projectile in flight. b. A thin, usually curved projection attached to the rear bottom of a surfboard for stability. c. A projecting vane used for cooling, as on a radiator or an engine cylinder. d. See tail fin. 3. See flipper. v. finned, fin·ning, fins v.tr. To equip with fins. v.intr. 1. To emerge with the fins above water. 2. To swim, as a fish. 3. To lash the water with the fins. Used of a dying whale. [Middle English, from Old English finn.]

fin1 fins of a typical bony fish

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fin

Noun

1. any of the winglike projections from a fish's body enabling it to balance and swim

2. Brit a vertical surface to which the rudder is attached at the rear of an aeroplane

3. a swimmer's flipper [Old English finn]

finned adj

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fin  (fn)

One of the winglike or paddlelike parts of a fish, dolphin, or whale that are used for propelling, steering, and balancing in water.

Thesaurus

Noun	1.	fin - the cardinal number that is the sum of four and one 5, cinque, five, fivesome, Little Phoebe, pentad, Phoebe, quint, quintuplet, quintet, V digit, figure - one of the elements that collectively form a system of numeration; "0 and 1 are digits"
	2.	fin - one of a pair of decorations projecting above the rear fenders of an automobile tail fin, tailfin auto, automobile, car, motorcar, machine - a motor vehicle with four wheels; usually propelled by an internal combustion engine; "he needs a car to get to work" decoration, ornament, ornamentation - something used to beautify
	3.	fin - one of a set of parallel slats in a door or window to admit air and reject rain louver, louvre jalousie - a shutter made of angled slats slat, spline - a thin strip (wood or metal)
	4.	fin - a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater) flipper shoe - footwear shaped to fit the foot (below the ankle) with a flexible upper of leather or plastic and a sole and heel of heavier material
	5.	fin - a stabilizer on a ship that resembles the fin of a fish ship - a vessel that carries passengers or freight stabiliser, stabilizer - a device for making something stable vane - a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it
	6.	fin - organ of locomotion and balance in fishes and some other aquatic animals ray - any of the stiff bony spines in the fin of a fish dorsal fin - unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance pectoral fin - either of a pair of fins situated just behind the head in fishes that help control the direction of movement pelvic fin, ventral fin - either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate caudal fin, tail fin - the tail of fishes and some other aquatic vertebrates fish - any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills; "the shark is a large fish"; "in the living room there was a tank of colorful fish" appendage, extremity, member - an external body part that projects from the body; "it is important to keep the extremities warm"
Verb	1.	fin - equip (a car) with fins equip, fit out, outfit, fit - provide with (something) usually for a specific purpose; "The expedition was equipped with proper clothing, food, and other necessities"
	2.	fin - propel oneself through the water in a finning motion aquatics, water sport - sports that involve bodies of water swim - travel through water; "We had to swim for 20 minutes to reach the shore"; "a big fish was swimming in the tank"
	3.	fin - show the fins above the water while swimming; "The sharks were finning near the surface" break water swim - travel through water; "We had to swim for 20 minutes to reach the shore"; "a big fish was swimming in the tank"

Translations

fin [fɪn] n (gen) → aleta

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fin [fɪn] n [of fish] → nageoire f [of shark]; aileron m [of diver]; palme f

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fin [fɪn] n → Flosse f;

(Tech) → Seitenflosse f

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fin [fɪn] n [of fish] → pinna