noun

1. (animal anatomy) a breathing organ of fish and other aquatic animals

2. (of a fish) a gill slit or gill cover

   “Gill nets are designed to catch a fish by the gills.”

3. One of the radial folds on the underside of the cap of a mushroom, on the surface of which the spore-producing organs are borne

Synonyms: lamella

verb

1. To remove the gills from a fish as part of gutting and cleaning it

2. To catch (a fish) in a gillnet

3. To be or become entangled in a gillnet