Is SIEVE a Wordle Word?

Yes. SIEVE is a valid Wordle word.

It is on the original Wordle answer list and has not been an answer yet, so it could be a future answer.

What does SIEVE mean?

/sɪv/

A device with a mesh bottom to separate, in a granular material, larger particles from smaller ones, or to separate solid objects from a liquid.“Use the sieve to get the pasta from the water.”
A process, physical or abstract, that arrives at a final result by filtering out unwanted pieces of input from a larger starting set of input.“Given a list of consecutive numbers starting at 1, the Sieve of Eratosthenes algorithm will find all of the prime numbers.”
A kind of coarse basket.

2 more noun definitions

A person, or their mind, that cannot remember things or is unable to keep secrets.
A collection of morphisms in a category whose codomain is a certain fixed object of that category, which collection is closed under pre-composition by any morphism in the category.

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

Starter word rating: WeakIn the top 69% of all valid Wordle words for testing common letters.
Vowels: I, E
Unique letters: 4 of 5Repeats E
Common letters: I, E

Hard-mode trap: 6 valid words fit the pattern _IEVE. 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.