Answer:

dredges

AnswerCrossword Clue
DREDGESGiant silt removers
DREDGESScoops up river sediment
DREDGESDigs up some dirt
DREDGESEarth-moving machines
DREDGESLand-reclamation machines
DREDGESExcavators.
DREDGESSprinkles a roast with flour.
DREDGESProbes the river bed.
DREDGESSprinkles with flour.
DREDGESScrapes the bottom
DREDGESDeepens a channel
DREDGESDeepens, as a canal
DREDGESSearches the river bottom