Is SLAYS a Wordle Word?

Yes. SLAYS 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 SLAYS mean?

To kill, murder.“Our foes must all be slain.”
To eradicate or stamp out.“You must slay these thoughts.”
(by extension) To defeat, overcome (in a competition or contest).“1956, “Giants Slay Bears in Pro Title Battle”, in Lodi News-Sentinel, 1956 December 31, page 8.”

3 more verb definitions

To delight or overwhelm, especially with laughter.“Ha ha! You slay me!”
To amaze, stun or otherwise incapacitate by awesomeness; to be awesome at something; to kill (slang sense).
To have sex with

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

Starter word rating: WeakIn the top 61% of all valid Wordle words for testing common letters.
Vowels: A
Unique letters: 4 of 5Repeats S
Common letters: L, A

Hard-mode trap: 8 valid words fit the pattern SLA_S. 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.