noun, plural vir·e·os.
Origin of vireo
Examples from the Web for vireo
The vireo had stopped singing and was swinging on a bough above them.
At this the vireo burst into such mocking, derisive laughter of song that they both looked up and smiled.
Hardly had the song ended when she heard the familiar voice of Redeye the Vireo.Mrs. Peter Rabbit|Thornton W. Burgess
The two parts of the m. gastrocnemius are most distinct in Vireo.Myology and Serology of the Avian Family Fringillidae|William B. Stallcup
A case is mentioned where three of these parasitic eggs had been deposited in the nest of the Vireo before any of her own.Nests and Eggs of Birds of The United States|Thomas G. Gentry