smalt
/smɔːlt/noun
mass noun
1- chiefly historical glass coloured blue with cobalt oxide〈主史〉大青（氧化钴蓝玻璃）。
1.1
- a pigment made by pulverizing such glass大青玻璃粉。
词源
mid 16th cent.: from French, from Italian smalto, of Germanic origin; related to SMELT1.