I. e‧nam‧el¹ /ɪˈnæməl/ noun [uncountable]
[Date: 1400-1500; Origin: ⇒ enamel²]

1. a hard shiny substance that is put onto metal, clay etc for decoration or protection

2. the hard smooth outer surface of your teeth

3. a type of paint that produces a shiny surface when it is dry
—enamel adjective

[TahlilGaran] Dictionary of Contemporary English ▲

II. enamel² verb (past tense and past participle enamelled, present participle enamelling British English, enameled, enameling American English) [transitive]
[Date: 1300-1400; Language: Anglo-French; Origin: enamailler, from Old French esmail 'enamel']
to cover or decorate with enamel

[TahlilGaran] Dictionary of Contemporary English ▲