Patina Meaning in Bengali

What is the meaning of word Patina in Bengali/Bangla ?

Meaning of Patina in Bangla is : চার্জার (c a r . j a r)

Defenition of word Patina

• a green or brown film on the surface of bronze or similar metals, produced by oxidation over a long period.

Example

Most of the scratchy lines and squiggles visible here are the green patina of oxidized bronze, not a part of the original coin as cast.

Other Meaning of Patina