1. (noun)palace, castle a large and stately mansion Synonyms: castling, castle, rook, palace
2. (noun)castle a large building formerly occupied by a ruler and fortified against attack Synonyms: castling, rook, palace
3. (noun)castle, rook (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard Synonyms: castling, castle, rook, palace
4. (verb)castle, castling interchanging the positions of the king and a rook Synonyms: castling, castle, rook, palace
5. (verb)castle move the king two squares toward a rook and in the same move the rook to the square next past the king
Synonyms, Thesaurus & Antonyms of 'castle'
English Synonyms and Antonyms
1. castle Fortification is the general word for any artificial defensive work; a fortress is a fortification of especial size and strength; a fortress is regarded as permanent, and is ordinarily an ind Synonyms: fortification, castle, citadel, fastness, fort, fortress, stronghold
Synonyms for castle 
