Is NAILS a Wordle Word?

Yes. NAILS 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 NAILS mean?

/neɪlz/

The thin, horny plate at the ends of fingers and toes on humans and some other animals.“When I'm nervous I bite my nails.”
The basal thickened portion of the anterior wings of certain hemiptera.
The terminal horny plate on the beak of ducks, and other allied birds.

4 more noun definitions

The claw of a bird or other animal.
A spike-shaped metal fastener used for joining wood or similar materials. The nail is generally driven through two or more layers of material by means of impacts from a hammer or other device. It is then held in place by friction.
A round pedestal on which merchants once carried out their business, such as the four nails outside The Exchange, Bristol.
An archaic English unit of length equivalent to 1/20 of an ell or 1/16 of a yard (2 1/4 inches or 5.715 cm).

To fix (an object) to another object using a nail.“He nailed the placard to the post.”
To drive a nail.“He used the ax head for nailing.”
To stud or boss with nails, or as if with nails.

7 more verb definitions

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

Starter word rating: AverageIn the top 12% of all valid Wordle words for testing common letters.
Vowels: A, I
Unique letters: 5 of 5
Common letters: A, I, L

Hard-mode trap: 13 valid words fit the pattern _AILS. 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.