Is STAGS a Wordle Word?

Yes. STAGS 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 STAGS mean?

8 more noun definitions

An improperly or late castrated bull or ram – also called a bull seg (see note under ox).
An outside irregular dealer in stocks, who is not a member of the exchange.
One who applies for the allotment of shares in new projects, with a view to sell immediately at a premium, and not to hold the stock.
The Eurasian wren, Troglodytes troglodytes.
(usually attributive) An unmarried male, a bachelor; a male not accompanying a female at a social event.“a stag dance; a stag party”
A social event for males held in honor of a groom on the eve of his wedding, attended by male friends of the groom, sometimes a fund-raiser.“The stag will be held in the hotel's ballroom.”
A stag beetle (family Lucanidae).
Guard duty.

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

Starter word rating: WeakIn the top 68% of all valid Wordle words for testing common letters.
Vowels: A
Unique letters: 4 of 5Repeats S
Common letters: T, A

Hard-mode trap: 9 valid words fit the pattern S_AGS. 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.