Dredger n. (Cookery) A box with holes in its lid; used for sprinkling flour, as on meat or a breadboard; called also dredging box, drudger, and drudging box.
... grocer's shop you see, will you, and buy me a couple of pounds of the best white flour that's milled; and if you can't manage to get me either a sieve or a flour dredger, a ... — Cleek: the Man of the Forty Faces • Thomas W. Hanshew