Is MIROS a Wordle Word?

Yes. MIROS is a valid Wordle word.

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

Plurals ending in S are almost never chosen as Wordle answers.

What does MIROS mean?

Plural of miro: A large conifer of New Zealand, Pectinopitys ferruginea (syn. Prumnopitys ferruginea), with narrow leaves and reddish fruit; the wood of this tree.

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

Starter word rating: AverageIn the top 28% of all valid Wordle words for testing common letters.
Vowels: I, O
Unique letters: 5 of 5
Common letters: I, R, O

Hard-mode trap: 6 valid words fit the pattern MI_OS. If you reach it, you may need several guesses to find the last letter.

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.