castle

A castle is a huge, grand home where a king or queen might live. Almost all castles are also fortified against attacks by enemy armies.

Most castles were built in the Middle Ages by royalty or other nobility. You can still visit many historic castles in Europe, most of them built of stone and including details like towers and guardhouses. You can also call the chess piece known as a "rook" a castle, for its castle-like shape. The word has an Old English root, castel, or "village."

Definitions of castle
  1. noun
    a large building formerly occupied by a ruler and fortified against attack
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    examples:
    Balmoral Castle
    a castle in northeastern Scotland that is a private residence of the British sovereign
    type of:
    fortification, munition
    defensive structure consisting of walls or mounds built around a stronghold to strengthen it
  2. noun
    a large and stately mansion
    synonyms: palace
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    examples:
    Buckingham Palace
    the London residence of the British sovereign
    type of:
    hall, manse, mansion, mansion house, residence
    a large and imposing house
  3. noun
    (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
    synonyms: rook
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    type of:
    chess piece, chessman
    any of 16 white and 16 black pieces used in playing the game of chess
  4. noun
    interchanging the positions of the king and a rook
    synonyms: castling
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    type of:
    chess move
    the act of moving a chess piece
  5. verb
    move the king two squares toward a rook and in the same move the rook to the square next past the king
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    type of:
    go, move
    have a turn; make one's move in a game
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