Is LINOS a Wordle Word?

Yes. LINOS 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 LINOS mean?

An assistant referee.
A male line judge.
An official whose primary task is to watch the blue line and determine when there has been an offside.

3 more noun definitions

An official whose primary task is to determine whether there has been a line of scrimmage violation.
A person employed to work on electrical lines; a lineman.
A private in the line.

An inexpensive waterproof covering used especially for floors, made from solidified linseed oil over a burlap or canvas backing, or from its modern replacement, polyvinyl chloride.

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: I, O
Unique letters: 5 of 5
Common letters: L, I, O

Hard-mode trap: 8 valid words fit the pattern _INOS. 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.