A gill of a fish. Usually in plural.

General attributive (in sense 1), as gill artery, gill-branch, gill-muscle, gill-tuft, gill vein, etc.

The awn or beard (in Latin also the whole ear) of grain and grasses; hence used of similar bristle-like processes, as the fibrils which fringe…

A rod, bar, etc., forming one of a set extending in several directions from one point; a spoke of a wheel; a radiating part or filament, etc.

(see quot.).

Zoology. The bony flap covering the gills of a fish; a gill cover. Also: a fleshy flap that grows over the gills of a larval amphibian.

Anatomy †(a) The epiglottis. Obsolete. (b) In fishes: The operculum or gill-cover; a similar cover for the nostril.

Zoology and Botany. An operculum.

= suboperculum, n. 1.

Ichthyology. The anterior of four bones forming the operculum in fishes.

= preoperculum, n. 1.

= preoperculum, n. 1.

One of the four bones normally forming the gill-cover, esp. in teleostean and ganoid fishes; usually situated below the præoperculum, and partly…

= preoperculum, n. 1.

Zoology. Any of the projections on the inner side of a fish's gill arch which prevent solid matter from entering the gill; = gill raker n. at gill…