godan verb (-u), transitive verb
dredge; sweep away; wash away
Used for removing silt, debris, or water from a channel, river, or ditch; also for sweeping or washing things away in a broader sense.
川の底を浚って、水の流れを良くする。
They dredge the riverbed to improve the water flow.
大雨が道路の泥を浚っていった。
The heavy rain washed away the mud on the road.