castle
noun [ C ] uk/ˈkɑː.səl/ us/ˈkæs.əl/
A2 城堡;堡垒
a large strong building, built in the past by a ruler or important person to protect the people inside from attack
（国际象棋）车（rook的非正式说法）
informal for rook
- More examples
- In addition to his flat in London, he has a villa in Italy and a castle in Scotland.
- The castle is set on a steep hill.
- 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.
Idiom
castles in the airidiom 空中楼阁;空想，几乎不可能实现的计划
plans that have very little chance of happening
castle
verb [ I ] games specialized uk/ˈkɑː.səl/ us/ˈkæs.əl/
（国际象棋中）王车易位
in chess, to make a special move that puts your king in a more protected place at the side of the board