Definition of sieves:
(n) :
A device with a mesh, grate, or otherwise perforated bottom to separate, in a granular material, larger particles from smaller ones, or to separate solid objects from a liquid.
(n) :
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.
(v) :
To strain, sift or sort using a sieve.
(n) :
(colloquial) A person, or their mind, that cannot remember things or is unable to keep secrets.
(v) :
(sports) To concede; let in
(n) :
(medicine, slang, derogatory) An intern who lets too many non-serious cases into the emergency room.