名词

1. 城堡;堡垒
A castle is a large building with thick, high walls. Castles were built by important people, such as kings, in former times, especially for protection during wars and battles.

2. (国际象棋中的)车
In chess, a castle is a piece that can be moved forwards, backwards, or sideways.

1. interchanging the positions of the king and a rook

Synonym: castling

2. a large building formerly occupied by a ruler and fortified against attack

3. (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard

Synonym: rook

4. a large and stately mansion

Synonym: palace