sieve

/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.

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.