Related Clues:
- Water containers?
- Stops up, as a river
- Blocks, like a river
- Power-production projects
- They surround many castles
- Lake formers
- Structures beavers build
- Strategic bodies of water
- Fluid obstacles
- Holds back, in a way
- River-blocking constructions
- Castle barriers under drawbridges
- Watery castle protectors
- Stops (up)
- They're found around castles