Is NICKS a Wordle Word?

Yes. NICKS 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 NICKS mean?

/nɪks/

A small cut in a surface.
Senses connoting something small.
Often in the expressions in bad nick and in good nick: condition, state.“The car I bought was cheap and in good nick.”

1 more noun definition

(law enforcement) A police station or prison.“He was arrested and taken down to Sun Hill nick [police station] to be charged.”

To make a nick or notch in; to cut or scratch in a minor way.“I nicked myself while I was shaving.”
To fit into or suit, as by a correspondence of nicks; to tally with.
To make a cut at the side of the face.

2 more verb definitions

To steal.“Someone’s nicked my bike!”
(law enforcement) To arrest.“The police nicked him climbing over the fence of the house he’d broken into.”

A familiar, invented given name for a person or thing used instead of the actual name of the person or thing.
A kind of byname that describes a person by a characteristic of that person.

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

Starter word rating: WeakIn the top 70% of all valid Wordle words for testing common letters.
Vowels: I
Unique letters: 5 of 5
Common letters: I

Hard-mode trap: 12 valid words fit the pattern _ICKS. 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.