Is PEAKS a Wordle Word?

Yes. PEAKS 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 PEAKS mean?

/piːks/

A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap.
The highest value reached by some quantity in a time period.“The stock market reached a peak in September 1929.”
The top, or one of the tops, of a hill, mountain, or range, ending in a point.“They reached the peak after 8 hours of climbing.”

5 more noun definitions

The whole hill or mountain, especially when isolated.
The upper aftermost corner of a fore-and-aft sail.“peak-brails”
The narrow part of a vessel's bow, or the hold within it.
The extremity of an anchor fluke; the bill.
A local maximum of a function, e.g. for sine waves, each point at which the value of y is at its maximum.

To reach a highest degree or maximum.“Historians argue about when the Roman Empire began to peak and ultimately decay.”
To rise or extend into a peak or point; to form, or appear as, a peak.
To raise the point of (a gaff) closer to perpendicular.

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

Starter word rating: AverageIn the top 24% of all valid Wordle words for testing common letters.
Vowels: E, A
Unique letters: 5 of 5
Common letters: E, A

Hard-mode trap: 6 valid words fit the pattern _EAKS. 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.