Synonyms for Sieve (same or very similar meaning)
WordNet sense 1 (a strainer for separating lumps from powdered material or grading particles):
screenWordNet sense 2 (examine in order to test suitability):
sort, screen outWordNet sense 3 (check and sort carefully):
siftWordNet sense 4 (separate by passing through a sieve or other straining device to separate out coarser elements):
strainFrom the ODE community, based on WordNetadd/edit