clear the bed of (a harbour, river, or other area of water) by scooping out mud, weeds, and rubbish with a dredge

the lower stretch of the river had been dredged

the dredging and deepening of the canal

an apparatus for bringing up objects or mud from a river or seabed by scooping or dragging

sprinkle (food) with a powdered substance such as flour or sugar

dredge the bananas with sugar and cinnamon