rook

n = castle 2.

romantically, romanticism, romanticist, romanticize, romanticize, romanticise, Romany, Rome, romp, rompers, Ronald Reagan, rondo, rontgen, rood, rood-screen, roof, roof-garden, roof-rack (also `luggage-rack), roof-top, roof-tree, roofing, rookery, rookie, room, room service, room-mate, roomer, roomful, roominess, rooming-house, roomy, roost, rooster, root, root beer, root vegetable, root-crop, rooted, rootless, rootlessness, rope,