Definition of vireo
: any of various small insectivorous American oscine birds (family Vireonidae, especially genus Vireo) that are chiefly olivaceous and grayish in color
Recent Examples of vireo from the Web
The report to the Planning Commission notes the mining will have a significant impact to six acres of sensitive habitat, including southern willow scrub occupied by Least Bell’s vireo.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'vireo.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of vireo
Latin, a small bird, from virēre to be green
First Known Use: 1834See Words from the same year
VIREO Defined for Kids
Definition of vireo for Students
: a small songbird that eats insects and is olive-green or grayish in color
Seen and Heard
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