Is TREES a Wordle Word?

Yes. TREES 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 TREES mean?

/tɹiːz/

A perennial woody plant, not exactly defined, but differentiated from a shrub by its larger size (typically over a few meters in height) or growth habit, usually having a single (or few) main axis or trunk unbranched for some distance above the ground and a head of branches and foliage.“Birds have a nest in a tree in the garden.”
Any plant that is reminiscent of the above but not classified as a tree (in any botanical sense).“the banana tree”
An object made from a tree trunk and having multiple hooks or storage platforms.“He had the choice of buying a scratching post or a cat tree.”

12 more noun definitions

A device used to hold or stretch a shoe open.“He put a shoe tree in each of his shoes.”
The structural frame of a saddle.
A connected graph with no cycles or, if the graph is finite, equivalently a connected graph with n vertices and n−1 edges.
A recursive data structure in which each node has zero or more nodes as children.
A display or listing of entries or elements such that there are primary and secondary entries shown, usually linked by drawn lines or by indenting to the right.“We’ll show it as a tree list.”
Any structure or construct having branches representing divergence or possible choices.“family tree; skill tree”
The structure or wooden frame used in the construction of a saddle used in horse riding.
(in the plural) Marijuana.
A cross or gallows.“Tyburn tree”
Wood; timber.
A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution.
The fifth Lenormand card.

To chase (an animal or person) up a tree.“The dog treed the cat.”
To place in a tree.“Black bears can tree their cubs for protection, but grizzly bears cannot.”
To place upon a tree; to fit with a tree; to stretch upon a tree.“to tree a boot”

1 more verb definition

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

Starter word rating: AverageIn the top 22% of all valid Wordle words for testing common letters.
Vowels: E
Unique letters: 4 of 5Repeats E
Common letters: T, R, E

Hard-mode trap: 7 valid words fit the pattern _REES. 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.