Related Clues:
- Teetotaller rings old city about part of castle
- Fortress barrier
- Zoo channel
- Ring around a castle
- Water defence
- Part of a castle's defense
- Expression of disapproval about upsetting sin — guns out of here?
- Castle barrier
- Small tower on a building
- Castle security
- Revolving gun holder
- Little (e.g. castle) tower
- Ditch round castle
- Armoured tower
- Defensive water