- Clear river bottom
- Clear the bed of (a harbour, say)
- Doctor crept along and cleaned river
- Dragnet
- Excavate (mud)
- Excavating machine
- Machine for deepening a channel
- Dragnet
- Fish commercially
- Fish with a wide net
- Fish with moving line
- Scrub chorus disrupted by departure of high leader
- Search thoroughly
- The odd thread will catch fish
- Dragged for fish
- Used dragnet