word \ multi \ castle \ super \ micro \ euro \ petro

super micro euro petro castle
above, over small wide rock
  • a large and stately mansion
  • a large building formerly occupied by a ruler and fortified against attack
  • (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
  • interchanging the positions of the king and a rook