n. 1 large fortified building with towers and battlements. 2 Chess = ROOK2. v. (ling) Chess move a rook next to the king and the king to the other side of the rook. o castles in the air daydream; impractical scheme. [Latin castellum]
n. 1 large fortified building with towers and battlements. 2 Chess = ROOK2. v. (ling) Chess move a rook next to the king and the king to the other side of the rook. o castles in the air daydream; impractical scheme. [Latin castellum]