mother-of-pearl

Definition

The hard pearly inner layer of certain mollusk shells; nacre.

Etymology

Calque of Latin māter perlārum, with the first element perhaps connected in popular imagination with obsolete mother (“dregs”). Possibly referring to the fact that the nacre-lined shells are the belly (“mother”) in which pearls are produced.

Example Sentences

• "Ah, those Indian warehouses made the morning pass in a charming manner! many a soft confession was whispered over a huge china jar; many a heart has succumbed to a suite of mother-of-pearl card-box and counters; and as to the shawls, why, the whole feminine world has long ago acknowledged them to be irresistible."