enamelled
adjective
[ ɪˈnam(ə)ld ]
• coated or decorated with enamel.
• "an enamelled roasting tin"
enamel
verb
• coat or decorate (a metallic or hard object) with enamel.
• "he enamelled the back of the case in the rococo style"
Origin:
late Middle English (originally as a verb; formerly also as inamel ): from Anglo-Norman French enamailler, from en- ‘in, on’ + amail ‘enamel’, ultimately of Germanic origin.