|1.||the respiratory organ in many aquatic animals, consisting of a membrane or outgrowth well supplied with blood vessels. External gills occur in tadpoles, some molluscs, etc; internal gills, within gill slits, occur in most fishesRelated: branchial|
|2.||any of the radiating leaflike spore-producing structures on the undersurface of the cap of a mushroom|
|3.||to catch (fish) or (of fish) to be caught in a gill net|
|4.||(tr) to gut (fish)|
|[C14: of Scandinavian origin; compare Swedish gäl, Danish gjælle, Greek khelunē lip]|
|1.||archaic a girl or sweetheart|
|2.||dialect Also spelt: jill a female ferret|
|3.||an archaic or dialect name for ground ivy|
|[C15: special use of Gill, short for Gillian, girl's name]|
|gill (gĭl) Pronunciation Key
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in biology, type of respiratory organ found in many aquatic animals, including a number of worms, nearly all mollusks and crustaceans, some insect larvae, all fishes, and a few amphibians. The gill consists of branched or feathery tissue richly supplied with blood vessels, especially near the gill surface, facilitating the exchange of oxygen and carbon dioxide with the surrounding water. The gills may be enclosed in cavities, through which the water is often forcibly pumped, or they may project from the body into the water.
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