- [Anat] An organ for aquatic respiration; a branchia."Fishes perform respiration under water by the gills." [Ray.]
- pl.[Bot] The radiating, gill-shaped plates forming the under surface of a mushroom.
- [Zoöl] The fleshy flap that hangs below the beak of a fowl; a wattle.
- The flesh under or about the chin.
- [Spinning] One of the combs of closely ranged steel pins which divide the ribbons of flax fiber or wool into fewer parallel filaments.
Etymology: Prob. so called from F. aiguilles, needles. Ure.
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.
Etymology: Dan. giælle gelle; akin to Sw. gäl, Icel. gjölnar gills; cf. AS. geagl geahl, jaw