Patina
Pronunciation : Pat"ina
Part of Speech : n.
Etymology : [It., fr. L. patina a dish, a pan, a kind of cake. Cf. Paten.]
Definition : 1. A dish or plate of metal or earthenware; a patella.
2. (Fine Arts)
Defn: The color or incrustation which age gives to works of art; especially, the green rust which covers ancient bronzes, coins, and medals. Fairholt.
Source : Webster's Unabridged Dictionary, 1913