chalk

1. n. A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common limestone. Source: opted

2. n. 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. Source: opted

3. v. t. To rub or mark with chalk. Source: opted

4. v. t. To manure with chalk, as land. Source: opted

5. v. t. To make white, as with chalk; to make pale; to bleach. Source: opted

6. n. a soft whitish calcite Source: wordnet

7. n. a pure flat white with little reflectance Source: wordnet

8. n. an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant Source: wordnet

9. n. a piece of calcite or a similar substance, usually in the shape of a crayon, that is used to write or draw on blackboards or other flat surfaces Source: wordnet

10. v. write, draw, or trace with chalk Source: wordnet

11. 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. (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. [Slang] 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. 1. To rub or mark with chalk. 2. To manure with chalk, as land. Morimer. 3. To make white, as with chalk; to make pale; to bleach. Tennyson. Let a bleak paleness chalk the door. Herbert. To chalk out, to sketch with, or as with, chalk; to outline; to indicate; to plan. [Colloq.] "I shall pursue the plan I have chalked out." Burke. Source: webster

12. A soft, earthy substance, of a white, grayish, or yellowishwhite color, consisting of calcium carbonate, and having the samecomposition as common limestone. Source: adambom

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