Is STEEK a Wordle Word?

Yes. STEEK is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

What does STEEK mean?

/stiːk/

To stitch (sew with a needle).
To shut or close.
To use a technique for knitting garments such as sweaters in the round without interruption for openings or sleeves until the end.

A stitch.“Ake Ogilvie told the tale the next day to Ma Cleghorn, Ma lying at rest in her bed, she'd gone to bed with a steek in her side and as lying fair wearied till Ake looked in.”
The bridge of extra stitches used in the steeking technique.

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

Starter word rating: WeakIn the top 65% of all valid Wordle words for testing common letters.
Vowels: E
Unique letters: 4 of 5Repeats E
Common letters: T, E

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