Translation guide
The chess piece, not the bird. In Japanese chess (shogi), the equivalent piece is the hisha (flying chariot). For the bird, see 'crow' or 'raven'.
The rook in Western chess
The English word 'rook' can also mean a type of crow. In Japanese, that bird is called ミヤマガラス (miyamagarasu) or simply カラス (karasu). If you're talking about the bird, use those terms instead.
In shogi, the rook is a very powerful piece.