1 a large building with high walls and towers that was built in the past to defend people against attack 堡垒;城堡:
a medieval castle中世纪城堡Edinburgh Castle爱丁堡古堡
2 in the game of CHESS any of the four pieces placed in the corner squares of the board at the start of the game, usually made to look like a castle (国际象棋的)车
castle/ˋkæsḷ; ˈkɑːs$l/n [C] a very large strong building with high walls, built in the past to protect the people inside from attack 城堡: a 12th century castle 一座 12 世纪的城堡Windsor Castle 温莎堡