pa·ti·na /pəˈti:nə/ noun plural pa·ti·nas
] 1 :
a thin usually green layer that forms naturally on the metals copper and bronze when they are exposed to the air for a long time
a shiny or dark surface that forms naturally on something (such as wood or leather) that is used for a long time — usually singular ▪ the beautiful patina of this antique table
a thin layer — usually singular ▪ The kitchen counter was covered with a patina of grease.
— often used figuratively ▪ a criminal who has been given a patina of respectability by his friendship with well-known businessmen