0 a large strong building, built in the past by a ruler or important person to protect the people inside from attack -- 城堡；堡垒
1 in chess, to make a special move that puts your king in a more protected place at the side of the board -- （国际象棋中）王车易位
In addition to his flat in London, he has a villa in Italy and a castle in Scotland.
The castle's great hall was decorated with sumptuous wall hangings.
The fortifications of the castle were massive and impenetrable.
We visited an ancient ruined castle overlooking the sea.
