Jambes \Jambes\, Jambeux \Jam"beux\, n. pl. [From F. jambe a leg: cf. OF. jambiere. See {Jamb}, n.] (Ancient Armor) In the Middle Ages, armor for the legs below the knees, usually having front and back pieces; called also {greaves}. [Written also {giambeux}.] --Chaucer. [1913 Webster]