castle
/ˈkɑ:sl; ?@ ˈkæsl; `kæsl/
1 large fortified building or group of buildings with thick walls, towers, battlements and sometimes a moat 城堡; 堡垒
a medieval castle 中世纪的城堡
Windsor Castle 温莎宫. =>illus 见插图.
2 (also rook) (in chess) any of the four pieces placed in the corner squares of the board at the start of a game （国际象棋的）车. =>illus at chess 见chess之插图.
3 (idm 习语) (build) castles in the `air/in `Spain (have) plans or hopes that are unlikely to be realized; day-dreams 空中楼阁; 白日梦. an English-man's home is his castle => Englishman (English). castle, v [I]
(as a single move in chess) move either castle to the square next to the king and the king to the square on the other side of that castle （国际象棋中的一步）用车护王.