Is VIREO a Wordle Word?

Yes. VIREO is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

What does VIREO mean?

Any of a number of small insectivorous passerine birds, of the genus Vireo, that have grey-green plumage.
Any bird of the family Vireonidae, which includes vireos, shrike-vireo, greenlets and peppershrikes.
(in plural) The family Vireonidae.

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: AverageIn the top 13% of all valid Wordle words for testing common letters.
Vowels: I, E, O
Unique letters: 5 of 5
Common letters: I, R, E, O

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.