Oxbow :: Oxbow (n.) A frame of wood, bent into the shape of the letter U, and embracing an ox's neck as a kind of collar, the upper ends passing through the bar of the yoke; also, anything so shaped, as a bend in a river..
Roxburgh :: Roxburgh (n.) A style of bookbinding in which the back is plain leather, the sides paper or cloth, the top gilt-edged, but the front and bottom left uncut..