Rōōk1, n.
n. [Fr. & Pr. roc, Sp. & Pg. roque, It. rocco, M. H. Ger. roch, N. H. Ger. roche, from Per. & Ar. rokh, or rukh, a fabulous bird of enormous size and strength, and the rook or tower at chess, Hind. rukh, the castle at chess, Hind. rath, Bengal. roth, a war-chariot, the castle at chess, Skr. ratha, a car, a war-car.] (Chess.) One of the four pieces placed on the corner squares of the board; a castle.
¶ The rook moves the whole extent of the board, in lines parallel to its sides, unless impeded by some other piece. Hoyle.
