castle(chess) verb [UK: ˈkɑːs.l̩] [US: ˈkæs.l̩]Sorry, John, you can't castle because my bishop controls the f1 square. Can't you move it somewhere else? = Lo siento, John, no puedes enrocar porque mi alfil controla la casilla f1. ¿No puedes moverlo a otro lugar?