enamel

Etymology 1

From Middle English enamel, from Anglo-Norman enamailler, from en- (“in-”) + amailler (“to enamel”), variant of Old French esmailler (“to enamel”), from esmal (“enamel”), from Early Medieval Latin smaltum, from Frankish *smalt, from Proto-Germanic *smeltaną (“to melt, smelt”).

noun

1. An opaque, glassy coating baked onto metal or ceramic objects.
2. A coating that dries to a hard, glossy finish.
3. The hard covering on the exposed part of a tooth.
4. A cosmetic intended to give the appearance of a smooth and beautiful complexion.

Etymology 2

From Middle English enamelen, from the noun (see above).

verb

1. (transitive) To coat or decorate with enamel.
2. (transitive) To variegate with colours, as if with enamel.
3. (transitive) To form a glossy surface like enamel upon.
   to enamel card paper; to enamel leather or cloth
4. (transitive) To disguise with cosmetics, as a woman's complexion.