1
- a large building or group of buildings fortified against attack with thick walls, battlements, towers, and in many cases a moat城堡, 堡垒。
1.1
- a magnificent and imposing mansion, especially one that is the home or former home of a member of the nobility（尤指贵族现在或旧时所住的）宫堡, 巨宅, 宅邸：
as names Castle Howard.霍华德堡。
no obj.［often as noun castling］
1- Chess make a special move (no more than once in a game by each player) in which the king is transferred from its original square two squares along the back rank towards a rook on its corner square which is then transferred to the square passed over by the king【棋】王车易位, 用车护王。
1.1
- with obj. move (the king) in this way使（王）与车易位。
短语
castles in the air（或in Spain）
- visionary unattainable schemes; daydreams空中楼阁, 空想而不可实现的计划, 白日梦：
my father built castles in the air about owning a boat.
我爸爸做了拥有一条船这样的白日梦。
派生词
castled
adjective （archaic〈古〉）词源
late Old English: from Anglo-Norman French and Old Northern French castel, from Latin castellum, diminutive of castrum 'fort'.