Noun | 1. | chalk - a soft whitish calcite |
2. | chalk - a pure flat white with little reflectance | |
3. | chalk - amphetamine used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant Synonyms: deoxyephedrine, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, chicken feed, crank, trash, glass, ice | |
4. | chalk - a piece of chalk (or similar substance) used for writing on blackboards or other surfaces | |
Verb | 1. | chalk - write, draw, or trace with chalk |