Is TALER a Wordle Word?

Yes. TALER is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

What does TALER mean?

/ˈtɑlɚ/

A talker; a teller“Earth writes from the point of view of " 'Baylor' the Taler of Behler the Failer" who tells Scheherazade's story (to Death, her "familiar stranger") of Somebody's last voyage.”
A Germanic unit of currency used between the 15th and 19th centuries.

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

Starter word rating: ExcellentIn the top 1% of all valid Wordle words for testing common letters.
Vowels: A, E
Unique letters: 5 of 5
Common letters: T, A, L, E, R

Hard-mode trap: 10 valid words fit the pattern TA_ER. 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.