enamel
nounUK /ɪˈnæm.əl/
US /ɪˈnæm.əl/
Enamel is the hard white outside layer that keeps your teeth safe.
Brushing your teeth every day helps protect the enamel.
OTHER MEANINGS
2. A shiny, glass-like coating baked onto metal or pottery to decorate and protect it.
The old cooking pot had bright blue enamel on the outside.
3. A hard, glossy paint that dries to a smooth surface.
He painted the garden gate with black enamel.
4. The hard, smooth outer layer of a tooth.
Too much soda can wear away tooth enamel.