chalk

Noun
  1. A soft whitish calcite (synset 114830768)
    is a type of: calcite - a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone
    substance holonym: calcium carbonate - a salt found in nature as chalk or calcite or aragonite or limestone
    substance meronym: chalk - 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
  2. A pure flat white with little reflectance (synset 104968649)
    is a type of: white, whiteness - the quality or state of the achromatic color of greatest lightness (bearing the least resemblance to black)
  3. 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 (synset 103759824)
    is a type of:
    • amphetamine, pep pill, speed, upper - a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
    • controlled substance - a drug or chemical substance whose possession and use are controlled by law
    same as: chicken feed, crank, deoxyephedrine, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, methedrine, shabu, trash
  4. 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 (synset 103006695)
    is a type of: writing implement - an implement that is used to write
    subtypes:
    substance holonym: chalk - a soft whitish calcite
Verb
  1. Write, draw, or trace with chalk (synset 201694058)
    entail: delineate, describe, draw, line, trace - make a mark or lines on a surface
    is a type of: draw - represent by making a drawing of, as with a pencil, chalk, etc. on a surface

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