Is SINHS a Wordle Word?

Yes. SINHS 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 SINHS mean?

Plural of sinh: A traditional tube skirt worn by Lao and Thai women, particularly northern Thai and northeastern Thai women.

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

Starter word rating: WeakIn the top 83% of all valid Wordle words for testing common letters.
Vowels: I
Unique letters: 4 of 5Repeats S
Common letters: I

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