sieve

Definitions

• 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.
• 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.
• (obsolete) A kind of coarse basket.
• (colloquial) A person, or their mind, that cannot remember things or is unable to keep secrets.
• (category theory) 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.