dredge

n.

  1. Any instrument used to gather or take by dragging; as: (a) A dragnet for taking up oysters, etc., from their beds. (b) A dredging machine. (c) An iron frame, with a fine net attached, used in collecting animals living at the bottom of the sea.
  2. Very fine mineral matter held in suspension in water.
  3. A mixture of oats and barley.

v. t.

  1. To catch or gather with a dredge; to deepen with a dredging machine.
  2. To sift or sprinkle flour, etc., on, as on roasting meat.