A female chicken (Gallus gallus), particularly a sexually mature one kept for her eggs.

A female of other bird species, particularly a sexually mature female fowl.

(uncommon) A female fish (especially a salmon or trout) or crustacean.

(figurative) A noun "hen" represents a woman or a bride-to-be, especially in the context of a hen night.

(UK, informal) A hen night.

(Scotland, informal) An affectionate term of address used to women or girls.

(figurative, derogatory, uncommon) A henlike person of either sex.

The hard clam (Mercenaria mercenaria), a bivalve shellfish.

Alternative form of mother-hen