A-vĭgn'on Bĕr'ry

(a-veen'yong). (Bot.) The fruit of the Rhamnus Infectorius, and of other species of the same genus; — so called from the city of Avignon, in France. The berry is smaller than a pea, of a yellowish-green color, and bitter, astringent taste. It is used by dyers and painters for coloring yellow.