Is TUCKS a Wordle Word?

Yes. TUCKS 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 TUCKS mean?

An act of tucking; a pleat or fold.
A fold in fabric that has been stitched in place from end to end, as to reduce the overall dimension of the fabric piece.
A curled position.

4 more noun definitions

A plastic surgery technique to remove excess skin.
(piano, when playing scales on piano keys) The act of keeping the thumb in position while moving the rest of the hand over it to continue playing keys that are outside the thumb.
A curled position, with the shins held towards the body.
The afterpart of a ship, immediately under the stern or counter, where the ends of the bottom planks are collected and terminate by the tuck-rail.

To pull or gather up (an item of fabric).
To push into a snug position; to place somewhere safe or somewhat hidden.“Tuck in your shirt. I tucked in the sheet. He tucked the $10 bill into his shirt pocket.”
(often with "in" or "into") To eat; to consume.

6 more verb definitions

To fit neatly.“The sofa tucks nicely into that corner. Kenwood House is tucked into a corner of Hampstead Heath.”
To curl into a ball; to fold up and hold one's legs.“The diver tucked, flipped, and opened up at the last moment.”
To sew folds; to make a tuck or tucks in.“to tuck a dress”
To full, as cloth.
(of a drag queen, trans woman, etc.) To conceal one’s penis and testicles, as with a gaff or by fastening them down with adhesive tape.“Honey, have you tucked today? We don’t wanna see anything nasty down there.”
(when playing scales on piano keys) To keep the thumb in position while moving the rest of the hand over it to continue playing keys that are outside the thumb.

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

Starter word rating: WeakIn the top 74% of all valid Wordle words for testing common letters.
Vowels: U
Unique letters: 5 of 5
Common letters: T

Hard-mode trap: 13 valid words fit the pattern _UCKS. 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.