Gill slit
Gill Gill (g[i^]l), n. [Dan. gi[ae]lle, gelle; akin to Sw. g["a]l, Icel. gj["o]lnar gills; cf. AS. geagl, geahl, jaw.] 1. (Anat.) An organ for aquatic respiration; a branchia. [1913 Webster]

Fishes perform respiration under water by the gills. --Ray. [1913 Webster]

Note: Gills are usually lamellar or filamentous appendages, through which the blood circulates, and in which it is exposed to the action of the air contained in the water. In vertebrates they are appendages of the visceral arches on either side of the neck. In invertebrates they occupy various situations. [1913 Webster]

2. pl. (Bot.) The radiating, gill-shaped plates forming the under surface of a mushroom. [1913 Webster]

3. (Zo["o]l.) The fleshy flap that hangs below the beak of a fowl; a wattle. [1913 Webster]

4. The flesh under or about the chin. --Swift. [1913 Webster]

5. (Spinning) One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments. [Prob. so called from F. aiguilles, needles. --Ure.] [1913 Webster]

{Gill arches}, {Gill bars}. (Anat.) Same as {Branchial arches}.

{Gill clefts}. (Anat.) Same as {Branchial clefts}. See under {Branchial}.

{Gill cover}, {Gill lid}. See {Operculum}.

{Gill frame}, or {Gill head} (Flax Manuf.), a spreader; a machine for subjecting flax to the action of gills. --Knight.

{Gill net}, a flat net so suspended in the water that its meshes allow the heads of fish to pass, but catch in the gills when they seek to extricate themselves.

{Gill opening}, or {Gill slit} (Anat.), an opening behind and below the head of most fishes, and some amphibians, by which the water from the gills is discharged. In most fishes there is a single opening on each side, but in the sharks and rays there are five, or more, on each side.

{Gill rakes}, or {Gill rakers} (Anat.), horny filaments, or progresses, on the inside of the branchial arches of fishes, which help to prevent solid substances from being carried into gill cavities. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Gill slit — Slit Slit, n. [AS. slite.] A long cut; a narrow opening; as, a slit in the ear. [1913 Webster] {Gill slit}. (Anat.) See {Gill opening}, under {Gill}. [1913 Webster] …   The Collaborative International Dictionary of English

  • gill slit — n one of the openings or clefts between the gill arches in vertebrates that breathe by gills through which water taken in at the mouth passes to the exterior and bathes the gills also BRANCHIAL CLEFT * * * a long narrow opening from the pharynx… …   Medical dictionary

  • gill slit — [gil] n. any of a series of paired, slitlike openings between the pharynx and the area behind the mouth of fishes, some amphibians, etc …   English World dictionary

  • gill slit — noun one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes • Syn: ↑branchial cleft, ↑gill cleft • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑bodily structure, ↑ …   Useful english dictionary

  • Gill slit — Gill slits are gills with individual openings rather than an outer cover. Cartilaginous fish such as sharks, rays, sawfish, and guitarfish all have gill slits. Most have five pairs, but a few species have 6 or 7 pairs. Bony fish have an outer… …   Wikipedia

  • gill slit — gill opening …   Dictionary of ichthyology

  • gill slit — noun Date: 1854 1. any of the openings or clefts between the gill arches in vertebrates that breathe by gills through which water taken in at the mouth passes to the exterior and so bathes the gills 2. any of the rudimentary grooves in the neck… …   New Collegiate Dictionary

  • gill slit — /gil/. See branchial cleft. [1850 55] * * * …   Universalium

  • gill slit — noun An individual opening to gills, which lacks an operculum; characteristic of Cartilaginous fish such as sharks …   Wiktionary

  • gill cleft — gill slit …   Dictionary of ichthyology

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