Impeyan pheasantIm"pey*an pheas"ant\ [From Lady Impey, who attempted to naturalize the bird in England.] (Zo["o]l.) An Indian crested pheasant of the genus Lophophorus. Several species are known. Called also monaul, monal. Note: They are remarkable for the bright color and brilliant metallic hues of their plumage. The best known species (L. Impeyanus) has the neck of a brilliant metallic red, changing to golden yellow in certain lights.