Related Clues:
- Certain siege defense
- Water boundary
- Commemorative 1999 Broadway revue
- It's water under the bridge
- Thing around a castle
- 'Pippin' Tony winner Bob
- It surrounded the Wicked Witch's home
- Zoo barrier, sometimes
- "Damn Yankees" choreographer Bob
- Part of a castle's defenses
- Bob who directed the 1966 musical 'Sweet Charity'
- What a drawbridge might cover
- Sandcastle feature, at times
- Certain barrier to entry
- A drawbridge may span it