dredger

noun4

1. •
   A vessel equipped for the removal of sand or sediment from the seabed.
2. •
   A dredging machine.
3. •
   A container with a perforated lid, used to sprinkle sugar or flour.

   • In the kitchen Mrs. Piper was busy with a flour dredger, a rolling pin, and a basin of dough. — 1930
4. •
   One who fishes with a dredge.