Avignon berry

from The Century Dictionary.

• See berry.

from the GNU version of the Collaborative International Dictionary of English.

• (Bot.) The fruit of the Rhamnus infectorius, eand of other species of the same genus; -- so called from the city of Avignon, in France. It is used by dyers and painters for coloring yellow. Called also French berry.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The fruit of rock buckthorn aka Avignon buckthorn, Rhamnus saxafilis aka Rhamnus infectorius and of other species of the same genus, used by dyers and painters for coloring yellow.