Is CORKS a Wordle Word?

Yes. CORKS 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 CORKS mean?

The bark of the cork oak, which is very light and porous and used for making bottle stoppers, flotation devices, and insulation material.
A bottle stopper made from this or any other material.“Snobs feel it's hard to call it wine with a straight face when the cork is made of plastic.”
An angling float, also traditionally made of oak cork.

2 more noun definitions

The cork oak, Quercus suber.
The dead protective tissue between the bark and cambium in woody plants, with suberin deposits making it impervious to gasses and water.

3 more verb definitions

To fill with cork, as the center of a baseball bat.“He corked his bat, which was discovered when it broke, causing a controversy.”
To injure through a blow; to induce a haematoma.“The vicious tackle corked his leg.”
To position one's drift net just outside of another person's net, thereby intercepting and catching all the fish that would have gone into that person's net.

An aerialist maneuver involving a rotation where the rider goes heels over head, with the board overhead.

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

Starter word rating: WeakIn the top 48% of all valid Wordle words for testing common letters.
Vowels: O
Unique letters: 5 of 5
Common letters: O, R

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