CHALK

CHALK. → General scriptures concerning Isa 27:9

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chalk. Chalk, n. carbonic acid and lime, or carbonate of lime, a neutral salt, powerfully absorbent

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Chalk (?), n. [[AS. cealc lime, from L. calx limestone. See Calz, and Cawk.]] 1. 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common limestone.
2. 2. (Fine Arts) Finely prepared chalk, used as a drawing implement; also, by extension, a compound, as of clay and black lead, or the like, used in the same manner. See Crayon.
Black chalk, a mineral of a bluish color, of a slaty texture, and soiling the fingers when handled; a variety of argillaceous slate. — By a long chalk, by a long way; by many degrees. Lowell. — Chalk drawing (Fine Arts), a drawing made with crayons. See Crayon. — Chalk formation. See Cretaceous formation, under Cretaceous. — Chalk line, a cord rubbed with chalk, used for making straight lines on boards or other material, as a guide in cutting or in arranging work. — Chalk mixture, a preparation of chalk, cinnamon, and sugar in gum water, much used in diarrheal affection, esp. of infants. — Chalk period. (Geol.) See Cretaceous period, under Cretaceous. — Chalk pit, a pit in which chalk is dug. — Drawing chalk. See Crayon, n., 1. — French chalk, steatite or soapstone, a soft magnesian mineral. — Red chalk, an indurated clayey ocher containing iron, and used by painters and artificers; reddle.