SIEVE

noun

1. 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.
2. 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.
3. A kind of coarse basket.

verb

1. To strain, sift or sort using a sieve.
2. To concede; let in