Definition of "dredger"

dredger

/ˈdɹɛdʒ.ə(ɹ)/

noun
plural dredgers
1. (nautical) A vessel equipped for the removal of sand or sediment from the seabed.
2. One who fishes with a dredge.
3. A dredging machine.
4. A container with a perforated lid, used to sprinkle sugar or flour.
  Quotations
  In the kitchen Mrs. Piper was busy with a flour dredger, a rolling pin, and a basin of dough.
  1930, Norman Lindsay, Redheap, Sydney, N.S.W.: Ure Smith, published 1965, page 32