Chalk /(cha̤k)/

Chalk

n.
  1. A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common limestone. (Min.)
  2. 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. (Fine Arts)

Phrases & Compounds

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.
Chalk drawing
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
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.

Chalk

v. t.

imp. & p. p. Chalked; p. pr. & vb. n. Chalking

  1. To rub or mark with chalk.
  2. To manure with chalk, as land.
  3. To make white, as with chalk; to make pale; to bleach.
    Let a bleak paleness chalk the door.

Phrases & Compounds

To chalk out
to sketch with, or as with, chalk; to outline; to indicate; to plan.