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UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈfɪn/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/fɪn/ ,USA pronunciation: respelling(fin)
-fin- comes from Latin, where it has the meaning "end; complete; limit.'' This meaning is found in such words as: confine, define, definite, definition, final, finale, finance, fine, finish, finite, indefinite.
fin1(fin),USA pronunciationn., v.,finned, fin•ning. n.
Zoologya 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.
[Naut.]
Naval Termsa horizontal, often adjustable, winglike appendage to the underwater portion of a hull, as one for controlling the dive of a submarine or for damping the roll of a surface vessel.
Naval TermsSee fin keel.
AeronauticsAlso called vertical stabilizer. any of certain small, subsidiary structures on an aircraft, designed to increase directional stability.
any of a number of standing ridges on an ordinarily hot object, as a radiator, a cylinder of an internal-combustion engine, etc., intended to maximize heat transfer to the surrounding air by exposing a large surface area.
any part, as of a mechanism, resembling a fin.
Metallurgya ridge of metal squeezed through the opening between two rolls, dies, or halves of a mold in which a piece is being formed under pressure. Cf. flash (def. 11).
Automotivean ornamental structure resembling an aeronautical fin that is attached to the body of an automobile, as on each rear fender (tail fin.)
Slang Termsthe arm or hand.
ZoologyUsually, fins. flipper (def. 2).
v.t.
to cut off the fins from (a fish); carve or cut up, as a chub.
to provide or equip with a fin or fins.
v.i.
Zoologyto move the fins; lash the water with the fins, as a whale when dying.
bef. 1000; Middle English, Old English finn; cognate with Dutch vin, Low German finne; akin to Swedish fena
fin′less, adj. fin′like′, adj.
fin2(fin),USA pronunciationn.
Slang Termsa five-dollar bill.
Middle High German vumf, vimf; see five
Yiddish fin(e)f five
earlier finnip, finnup, fin(n)if(f ) a five-pound note 1865–70
any of the firm appendages that are the organs of locomotion and balance in fishes and some other aquatic animals. Most fishes have paired and unpaired fins, the former corresponding to the limbs of higher vertebrates
a part or appendage that resembles a fin
Brita vertical surface to which the rudder is attached, usually placed at the rear of an aeroplane to give stability about the vertical axis US name:vertical stabilizer
a tail surface fixed to a rocket or missile to give stability
a fixed or adjustable blade projecting under water from the hull of a vessel to give it stability or control
a projecting rib to dissipate heat from the surface of an engine cylinder, motor casing, or radiator
vb (fins, finning, finned)
(transitive) to provide with fins
Etymology: Old English finn; related to Middle Dutch vinne, Old Swedish fina, Latin pinna wing