Definitions

1. noun

A fortified chamber or room in a castle or fortress, especially one that is built into the side of a hill or into the ground.

“The medieval fortress had several casemates, which were used to house soldiers and provide defensive positions.”

2. noun

A type of armored fighting vehicle, typically a tank, designed to provide close-range defensive support.

“The army deployed a casemate to support the infantry during the urban operation.”

3. noun

A type of gun emplacement, typically in a fort or fortress, that is designed to provide defensive fire.

“The fort had several casemates that were used to defend against naval attacks.”