Is TRAYS a Wordle Word?

Yes. TRAYS 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 TRAYS mean?

A small, typically rectangular or round, flat, and rigid object upon which things are carried.“I carefully arranged the dishes on the tray and brought it upstairs.”
A flat carrier for items being transported.“Make sure that tray of eggs is properly loaded.”
The items on a full tray.“Before long they had consumed a whole tray of shrimp cocktails and sent for another.”

4 more noun definitions

A component of a device into which an item is placed for use in the device's operations.“The CD tray will not open.”
A notification area used for icons and alerts.
A type of retail or wholesale packaging for CPUs where the processors are sold in bulk and/or with minimal packaging.
(pickup) truck bed

To place (items) on a tray“Be sure to tray eggs with the large end up.”
To slide down a snow-covered hill on a tray from a cafeteria.“Traying has provided collegiate fun and the occasional fatality for decades.”

2 more noun definitions

The third bearer of the same personal name in a family, often denoted by suffixed Roman numeral III.
The third branch of a deer's antler.

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

Starter word rating: GoodIn the top 9% of all valid Wordle words for testing common letters.
Vowels: A
Unique letters: 5 of 5
Common letters: T, 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.