Is KOLAS a Wordle Word?

Yes. KOLAS 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 KOLAS mean?

The kola plant, genus Cola, famous for its nut, or one of these nuts.
A beverage or a drink made with kola nut flavoring, caramel and carbonated water.

A tree, genus Cola, bearing large brown seeds ("nuts") that are the source of cola extract.
A nut of this tree.

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

Starter word rating: AverageIn the top 29% of all valid Wordle words for testing common letters.
Vowels: O, A
Unique letters: 5 of 5
Common letters: O, L, A

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