Is MILKS a Wordle Word?

Yes. MILKS 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 MILKS mean?

A white liquid produced by the mammary glands of female mammals to nourish their young. From certain animals, especially cows, it is also called dairy milk and is a common food for humans as a beverage or used to produce various dairy products such as butter, cheese, and yogurt.
A white (or whitish) liquid obtained from a vegetable source such as almonds, coconuts, oats, rice, and/or soy beans. Also called non-dairy milk.
An individual serving of milk.“Table three ordered three milks. (Formally: The guests at table three ordered three glasses of milk.)”

3 more noun definitions

An individual portion of milk, such as found in a creamer, for tea and coffee.“I take my tea with two milk(s) and two sugar.”
The ripe, undischarged spat of an oyster.
Semen.

To express milk from (a mammal, especially a cow).“The farmer milked his cows.”
To draw (milk) from the breasts or udder.“to milk wholesome milk from healthy cows”
To express any liquid (from any creature).

3 more verb definitions

To make excessive use of (a particular point in speech or writing, a source of funds, etc.); to exploit; to take advantage of (something).“When the audience began laughing, the comedian milked the joke for more laughs.”
(of an electrical storage battery) To give off small gas bubbles during the final part of the charging operation.
To single-mindedly masturbate a male to ejaculation, especially for the amusement and/or satisfaction of the masturbator/trix rather than the person masturbated.“Controlled milking can actually establish and consolidate a mistress’ dominance over her sub rather than diminish it.”

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

Starter word rating: WeakIn the top 73% of all valid Wordle words for testing common letters.
Vowels: I
Unique letters: 5 of 5
Common letters: I, L

Hard-mode trap: 7 valid words fit the pattern MIL_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.