any of a family (Vireonidae) of small, insect-eating, American passerine birds, with olive-green or gray plumage
Origin of vireoL, greenfinch, akin to virere, to be green
Any of various small insectivorous songbirds of several genera, especially of the genus Vireo, found throughout the Americas and having grayish or greenish plumage.
Origin of vireoLatin vireō a kind of bird from virēre to be green
(plural vireos or vireoes)
From Latin vireo