p@ ti n@
noun
1. a greenish, brownish, or reddish crust or film produced by oxidation on the surface of old metals such as bronze and copper.
The bronze sculpture developed a green patina over time.
2. a surface gloss or other attractive quality imparted by time and use to a material such as wood or leather.
3. an appearance or air derived from long habit or an established role.
He had the patina of old money.
4. any superficial layer.
Beneath the civilized patina lurked a mere thug.