vireo

Any of various small insectivorous songbirds of several genera, especially of the genus Vireo, found throughout the Americas and having grayish or greenish plumage.

A genus of small greenish oscine or singing passerine birds of America, the type of the family Vireonidæ, and including most of the species of that family; the greenlets. See Vireonidæ, and cuts under greenlet and solitary.

[lowercase] A greenlet; any bird of the family Vireonidæ, especially of the genus Vireo.

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.

Any of several small insectivorous passerine birds, of the genus Vireo, that have grey-green plumage

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