-tə(r) noun
( -s )
: one that sifts: as
a. : a device or utensil like a sieve but usually of finer mesh for winnowing or refining powdered or granulated substances (as flour) and more often with a contrivance (as a rotator) to aid the action of sifting ; sometimes : sieve
b. : shaker ; also : the perforated top of a shaker
c. : a machine used in flour milling to separate particles of ground grain according to size by running them through sieves of increasing degrees of fineness arranged one above the other so that the coarsest is on top
d. : a worker who sifts cut tobacco on a riddle