dredger
nounUK /ˈdrɛdʒə/
US /ˈdrɛdʒər/
A dredger is a big machine that scoops up mud or sand from the bottom of the water.
The dredger slowly pulled sand from the harbor floor.
OTHER MEANINGS
2. A person whose job is to dredge rivers or harbors.
The dredger worked all day clearing the channel.
3. A boat or ship fitted with equipment for dredging.
A dredger arrived to deepen the river mouth.
4. A device or machine used to sprinkle flour or sugar over food.
She used a small dredger to dust the cake with sugar.