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Architecture the main tower within the walls of a medieval castle or fortress


Inner tower of a castle.

keep, donjon

The stronghold of a medieval castle, usually in the form of a massive tower, and a place of residence, esp. in times of siege.
References in periodicals archive ?
Keep in mind that multiple Patriots were fired at each scud, and still less than 60 percent were destroyed.
Also, keep in mind that not all products are available in all supermarkets.