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.
Also called vertical stabilizer. Aeronautics. 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.
Metallurgy. a 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.
Compare (def 11).
Automotive. an ornamental structure resembling an aeronautical fin that is attached to the body of an automobile, as on each rear fender (tail fin)
Slang. the arm or hand.
Usually, fins. (def 2).
verb (used with object), finned, finning.
to cut off the fins from (a fish); carve or cut up, as a chub.
to provide or equip with a fin or fins.
verb (used without object), finned, finning.
to move the fins; lash the water with the fins, as a whale when dying.
having one or more fins or finlike parts
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
(nautical) 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
(often pl) another name for flipper (sense 2)
verb fins, finning, finned
(transitive) to provide with fins
(transitive) to remove the fins from (a dead fish)
(intransitive) (esp of a whale) to agitate the fins violently in the water
(US, slang) a five-dollar bill
Finland (international car registration)
mid-14c., adjective in past participle form from fin.
Old English finn, from Proto-Germanic *finno (cf. Middle Low German vinne, Dutch vin), perhaps from Latin pinna “feather, wing” (see pin (n.)); or, less likely, from Latin spina “thorn, spine” (see spike (n.1)).
U.S. underworld slang sense of “$5 bill” is 1925, from Yiddish finif “five,” from German fünf (see five) and thus unrelated. The same word had been used in England 1868 to mean “five pound note” (earlier finnip, 1839).
One of the winglike or paddlelike parts of a fish, dolphin, or whale that are used for propelling, steering, and balancing in water.
A five-dollar bill; five dollars: I gave my pal a fin/ It was the fin seen round the world. Where Reagan got the five bucks is a mystery
[1920s+ Underworld; fr Yiddish finif, ”five”]
Finland (international vehicle ID)
[fin-boh-guh-daw-ter; Icelandic fin-baw-gah-doh-tir] /ˌfɪn boʊ gəˈdɔ tər; Icelandic ˌfɪn bɔ gɑˈdoʊ tɪr/ noun 1. Vigdís [Icelandic vig-dees] /Icelandic vɪgˈdis/ (Show IPA), born 1930, Icelandic political leader: president 1980–96.
[fahyuh r-fahyt] /ˈfaɪərˌfaɪt/ noun 1. an exchange of gunfire between two opposing forces, especially a skirmish between military forces. /ˈfaɪəˌfaɪt/ noun 1. a brief small-scale engagement between opposing military ground forces using short-range light weapons
[fahyuh r-fahy-ter] /ˈfaɪərˌfaɪ tɛr/ noun 1. a person who fights destructive . /ˈfaɪəˌfaɪtɪŋ/ noun 1. 2. the practice of reacting to urgent problems as they arise, as opposed to planning for the future /ˈfaɪəˌfaɪtə/ noun 1. a person who fights fires, usually a public employee or trained volunteer n. 1903, from fire (n.) + fighter. […]
[fahyuh r-fluhd] /faɪərˌflʌd/ noun 1. a procedure designed to extract more oil from a well by injecting compressed air into the ground and burning some of the oil to increase the flow.