dredgers

noun
  1. 1

    A vessel equipped for the removal of sand or sediment from the seabed.

  2. 2

    One who fishes with a dredge.

  3. 3

    A dredging machine.

  4. 4

    A container with a perforated lid, used to sprinkle sugar or flour.

Source: https://en.wiktionary.org/wiki/dredger, https://en.wiktionary.org/wiki/dredgers