dredger n 1: a barge (or a vessel resembling a barge) that is used for dredging
Dredger \Dredg"er\ (dr[e^]j"[~e]r), n. 1. One who fishes with a dredge. [1913 Webster] 2. A dredging machine. [1913 Webster]
Dredger \Dredg"er\, 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}. [1913 Webster]