What is the meaning of Enamel?

An opaque, glassy coating baked onto metal or ceramic objects.

A coating that dries to a hard, glossy finish.

The hard covering on the exposed part of a tooth.

A cosmetic intended to give the appearance of a smooth and beautiful complexion.

To coat or decorate with enamel.

To variegate with colours, as if with enamel.

To form a glossy surface like enamel upon.

To disguise with cosmetics, as a woman's complexion.

Source: wiktionary.org