Dictionary > Gill

Gill

Gill
a woody glen; a narrow valley containing a stream.
Origin: Icel. Gil.
1. (Science: anatomy) An organ for aquatic respiration; a branchia. Fishes perform respiration under water by the gills. (Ray)
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.
2. (Science: botany) The radiating, gill-shaped plates forming the under surface of a mushroom.
3. (Science: zoology) The fleshy flap that hangs below the beak of a fowl; a wattle.
4. The flesh under or about the chin.
5. One of the combs of closely ranged steel pins which divide the ribbons of flax fibre or wool into fewer parallel filaments. So called from f. Aiguilles, needles gill arches, gill bars.
(Science: anatomy) 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.
Origin: dan. Giaelle, gelle; akin to
75c
Sw. Gal, Icel. Gjolnar gills; cf. As. Geagl, geahl, jaw.
1. A young woman; a sweetheart; a flirting or wanton girl. Each jack with his gill.
2. (Science: botany) The ground ivy (nepeta Glechoma); called also gill over the ground, and other like names.
3. Malt liquor medicated with ground ivy. Gill ale. Ale flavored with ground ivy.
(Science: botany) alehoof.
Origin: Abbrev. From Gillian.
Any of the radiating leaflike spore-producing structures on the underside of the cap of a mushroom or similar fungus.


You will also like...

Sugar Homeostasis
Sugar Homeostasis

The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..

Cambial cells
Plant Tissues

Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

Biological Cell Defense
Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

DNA molecule
Genetic Control – On and Off Genes

Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

Peppered moth ("Biston betularia") melanic and light form
Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

Disturbance on a still water
Abiotic Factors – Water Conditions

A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..