| Sifter 1. (n.) One who, or that which, sifts. 2. (n.) Any lamellirostral bird, as a duck or goose; -- so called because it sifts or strains its food from the water and mud by means of the beak. Thesaurus Entries bolter, clarifier, colander, cradle, cribble, filter, grate, grating, lixiviator, percolator, purifier, refiner, refinery, riddle, rocker, screen, sieve, sorter, strainer, winnow, winnowing basket, winnowing fan, winnowing machine |