Definition of "shagreen"

The following day the treasures of the mysterious tower came pouring in: pictures, statues, gems, shells, china, stuffed beasts and birds, tables, vases, petrifactions, arms, mandarins, &c. &c.; and among them the shagreen skin, with the injunction, "Sell it for any thing—nothing—give it away; only, get rid of it."

1832, Letitia Elizabeth Landon, Heath's Book of Beauty, 1833, The Talisman, page 80

On the old lecturn or reading-stand which he used for his heavier tomes, The Testaments of Carnamagos, in its covers of shagreen with hasps of human bone, lay open at the very page which had frightened him so unreasonably with its eldritch intimations.

August 1935, Clark Ashton Smith, Weird Tales, "The Treader of the Dust"

If the shagreen dots be carefully observed they will be found to possess an annular arrangement.

1883 November 7, Edward B. Poulton, “Notes upon, or suggested hy, the colours, markings, and protective attitudes of certain lepidopterous larvæ and pupæ, and of a phytophagous hymenopterous larva”, in Transactions of the Entomological Society of London

The shagreen of the abdominal tergites generally consists of small spinules, singly or in caudally convex arcs.

1985, “The Immature Chironomids of the Eastern United States VI. Pentaneurini-Genus Ablabesmyia”, in Proceedings of the Academy of Natural Sciences of Philadelphia, volume 137, number 2, pages 153–212