Ground pearl. (Zoöl.) See under Ground.Pearl barley, kernels of barley, ground so as to form small, round grains.Pearl diver, one who dives for pearl oysters.Pearl edge, an edge of small loops on the side of some kinds of ribbon; also, a narrow kind of thread edging to be sewed on lace.Pearl eye, cataract. [R.] — Pearl gray, a very pale and delicate blue-gray color.Pearl millet, Egyptian millet (Penicillaria spicata).Pearl moss. See Carrageen.Pearl moth(Zoöl.), any moth of the genus Margaritia; — so called on account of its pearly color.Pearl oyster(Zoöl.), any one of several species of large tropical marine bivalve mollusks of the genus Meleagrina, or Margaritifera, found in the East Indies in the Persian Gulf, on the coast of Australia, and on the Pacific coast of America. Called also pearl shell, and pearl mussel.Pearl powder. See Pearl white, below.Pearl sago, sago in the form of small pearly grains.Pearl sinter(Min.), fiorite.Pearl spar(Min.), a crystallized variety of dolomite, having a pearly luster.Pearl white. (a) Basic bismuth nitrate, or bismuth subchloride; — used chiefly as a cosmetic. (b) A variety of white lead blued with indigo or Berlin blue.

(Pearl) a. Of or pertaining to pearl or pearls; made of pearls, or of mother-of-pearl.

(Pearl), v. t.

1. To set or adorn with pearls, or with mother-of-pearl. Used also figuratively.

2. To cause to resemble pearls; to make into small round grains; as, to pearl barley.

(Pearl), v. i.

1. To resemble pearl or pearls.

2. To give or hunt for pearls; as, to go pearling.

(Pearl*a"ceous) a. Resembling pearl or mother-of-pearl; pearly in quality or appearance.

(Pearl"ash`) n. (Chem.) A white amorphous or granular substance which consists principally of potassium carbonate, and has a strong alkaline reaction. It is obtained by lixiviating wood ashes, and evaporating the lye, and has been an important source of potassium compounds. It is used in making soap, glass, etc.

(Pearl"-eyed`) a. Having a pearly speck in the eye; afflicted with the cataract.

(Pearl"fish`) n. (Zoöl.) Any fish whose scales yield a pearl-like pigment used in manufacturing artificial pearls, as the bleak, and whitebait.

(Pearl"ins Pearl"ings) n. pl. [Prob. a corruption of purflings. See Purfle.] A kind of lace of silk or thread. [Scot.] Sir W. Scott.

5. (Zoöl.) A light-colored tern.

6. (Zoöl.) One of the circle of tubercles which form the bur on a deer's antler.

7. A whitish speck or film on the eye. [Obs.] Milton.

8. A capsule of gelatin or similar substance containing some liquid for medicinal application, as ether.

9. (Print.) A size of type, between agate and diamond.

This line is printed in the type called pearl.

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