Definition of "vireo" in English

noun

1. Any of a number of small insectivorous passerine birds, of the genus Vireo, that have grey-green plumage.

   • 2012, Eloise Potter, Birds of the Carolinas, Easyread Large Edition, page 94, This is our only vireo that has two white wing bars, yellow spectacles, and yellow sides.

2. Any bird of the family Vireonidae, which includes vireos, shrike-vireos, greenlets, and peppershrikes.