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Fin Definition


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Other Fin Definition

[n] organ of locomotion and balance in fishes and some other aquatic animals
[n] a stabilizer that resembles the fins of a fish
[n] a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater)
[n] one of a set of parallel slats in a door or window to admit air and reject rain
[n] one of a pair of decorations projecting above the rear fenders of an automobile
[n] the cardinal number that is the sum of four and one
[v] show the fins above the water while swimming (of fish); "The sharks were finning near the surface"
[v] propel oneself through the water in a finning motion
[v] equip with fins, as of a car

Misc. Definitions

\Fin\, v. t. [imp. & p. p. {Finned}; p. pr. & vb. n. {Finning}.] [Cf. {Fin} of a fish.] To carve or cut up, as a chub.
\Fin\, n. [See {Fine}, n.] End; conclusion; object. [Obs.] ``She knew eke the fin of his intent.'' --Chaucer.
\Fin\, n.[OE. finne, fin, AS. finn; akin to D. vin, G. & Dan. finne, Sw. fena, L. pinna, penna, a wing, feather. Cf. {pen} a feather.]
1. (Zo["o]l.) 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. Note: 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. (Zo["o]l.) 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: (a) The hand. [Slang] (b) (Com.) A blade of whalebone. [Eng.] --McElrath. (c) (Mech.) A mark or ridge left on a casting at the junction of the parts of a mold. (d) (Mech.) The thin sheet of metal squeezed out between the collars of the rolls in the process of rolling. --Raymond. (e) (Mech.) A feather; a spline.
4. A finlike appendage, as to submarine boats. {Apidose fin}. (Zo["o]l.) See under {Adipose}, a. {Fin ray} (Anat.), one of the hornlike, cartilaginous, or bony, dermal rods which form the skeleton of the fins of fishes. {Fin whale} (Zo["o]l.), a finback. {Paired fins} (Zo["o]l.), the pectoral and ventral fins, corresponding to the fore and hind legs of the higher animals. {Unpaired, or Median}, {fins} (Zo["o]l.), the dorsal, caudal, and anal fins.
\Fin\, n. (A["e]ronautics) A fixed stabilizing surface, usually vertical, similar in purpose to a bilge keel on a ship.

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