nacre UK /ˈneɪkə/US /ˈneɪkəɹ/noun 2nacré adjective 1forms 1 noun2 •A pearly substance made mainly of stacked layers of aragonite and organic matter which lines the interior of many shells; mother-of-pearl.On a little table of dark perfumed wood thickly encrusted with nacre, […]was lying a note from Lord Henry, and beside it was a book bound in yellow paper, the cover slightly torn and the edges soiled. — 1891 •(no longer used) A shellfish which contains mother-of-pearl.The shell-fish called a Nacre, liveth even so with the Pinnotere, which is a little creature like unto a Crabfish[…]. — 1603 nacré adjective1 •Having an iridescence like that of nacre, or mother-of-pearl. formsnacres
