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Dictionary definition for: Chalk

1. (n) a soft whitish calcite

2. (v) write, draw, or trace with chalk

3. (n) a pure flat white with little reflectance

4. (n) amphetamine used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant

5. (n) a piece of chalk (or similar substance) used for writing on blackboards or other surfaces

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