Is GRAYS a Wordle Word?

Yes. GRAYS 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 GRAYS mean?

/ɡɹeɪz/

An achromatic colour intermediate between black and white.
An animal or thing of grey colour, such as a horse, badger, or salmon.
An extraterrestrial humanoid with grayish skin, bulbous black eyes, and an enlarged head.

1 more noun definition

To become gray.“My hair is beginning to gray.”
To cause to become gray.
To turn progressively older, alluding to graying of hair through aging (used in context of the population of a geographic region)“the graying of America”

1 more verb definition

To give a soft effect to (a photograph) by covering the negative while printing with a ground-glass plate.

In the International System of Units, the derived unit of absorbed dose of radiation (radiation absorbed by a patient); one joule of energy absorbed per kilogram of the patient's mass. Symbol: Gy

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

Starter word rating: AverageIn the top 27% of all valid Wordle words for testing common letters.
Vowels: A
Unique letters: 5 of 5
Common letters: R, A

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