Rook (noun)

1. A large black bird of the crow family, typically nesting on cliffs or in tall trees.
2. A chess piece shaped like a castle tower, which can move horizontally or vertically along a rank or file.

Origin:

From old english "roc" or "rocc", from proto-germanic "rukkaz".

Examples:

1. The rooks have nested on the cliff.
2. The rook is a member of the crow family.
3. The rook is a powerful piece in chess, able to move horizontally and vertically.
4. The rook can be used to control open files and ranks.
5. The rook is often used in combination with other pieces for checkmate.