caponiers
/ˈkæpəˌnɪrz/
noun
- Covered passages or galleries in a fortification, often used for defense or communication between different parts of a fortress.
- Tourists explored the dark caponiers, imagining life in the 18th-century stronghold.
- The soldiers moved through the caponiers to reach the outer walls without being seen.
- The old fortress had a network of caponiers connecting its bastions.