A castle is a large fortified structure, typically built during the Middle Ages for defensive purposes. The crossword solutions for the term 'castle' include 'FORTRESS' (8 letters), which is a large and strong defensive structure; 'TOWER' (5 letters), which is a tall structure usually used for defense; 'STRONGHOLD' (10 letters), which is a strongly fortified place; 'COURT' (5 letters), which is an enclosed area surrounded by walls or buildings; 'MANSION' (7 letters), which is a large and luxurious dwelling; 'KEEP' (4 letters), which is the main TOWER of a castle; 'HOME' (4 letters), which is a place of residence; 'VILLA' (5 letters), which is a large and luxurious house; 'CITADEL' (7 letters), which is a FORTRESS that commands a city; 'CHATEAU' (7 letters), which is a large French country house; 'moats' (5 letters), which are deep ditches filled with water surrounding a castle; 'PALACE' (6 letters), which is a large and magnificent residence; 'FORT' (4 letters), which is a defensive structure; 'ROOK' (4 letters), which is a chess piece shaped like a castle TOWER; and 'irene' (5 letters), which is a type of castle in Greece.