THESAURUS
strainer
clarifier, colander, cradle, cribble, cribriformity, cribrosity, filter, honeycomb, lixiviator, net, percolator, porosity, porousness, purifier, refiner, refinery, riddle, rocker, screen, sieve, sievelikeness, sifter, sponge, winnow, winnowing basket, winnowing fan, winnowing machine