mother-of-pearl
ˌmother-of-ˈpearl
noun [uncountable]
a pale-coloured hard smooth shiny substance that forms the inside of some shellfish, and is used for making buttons, jewellery etc
ˌmother-of-ˈpearl
noun [uncountable]a pale-coloured hard smooth shiny substance that forms the inside of some shellfish, and is used for making buttons, jewellery etc