pa·ti·na 
/pəˈti:nə/ noun
plural pa·ti·nas /pəˈti:nə/ noun [count] 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 2 : 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 3 : 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
