Vireo

n.

1.

(Zool.) Any one of numerous species of American singing birds belonging to Vireo and allied genera of the family Vireonidæ. In many of the species the back is greenish, or olive-colored. Called also greenlet.

Noun

1.

vireo - any of various small insectivorous American birds chiefly olive-gray in color

blue-headed vireo, genus Vireo, oscine, oscine bird, red-eyed vireo, solitary vireo, Vireo olivaceous, Vireo solitarius, Vireo solitarius solitarius