Definition
| • | A fortified residence, especially that of a prince or nobleman; a fortress. |
| • | Any strong, imposing, and stately mansion. |
| • | A small tower, as on a ship, or an elephant's back. |
| • | A piece, made to represent a castle, used in the game of chess; a rook. |
| • | To move the castle to the square next to king, and then the king around the castle to the square next beyond it, for the purpose of covering the king. |
