This biological meaning refers to an organ that extracts dissolved oxygen from water.
The fish passes water over its gills.
Crabs also breathe using gills.
This mycological meaning refers to the radiating blade-like structures that produce or carry spores.
The mushroom has pale gills beneath its cap.
Spores develop on the surfaces of the gills.
This meaning refers to an old unit of volume whose exact size differs between British and American systems.
The recipe called for one gill of milk.
A British imperial gill equals a quarter of a pint.
This regional British meaning refers to a narrow valley or ravine, often containing a stream.
A small stream flowed through the wooded gill.
The path descended into a steep gill.
