Noun
-
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
-
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
- methamphetamine hydrochloride - deoxyephedrine - chicken feed - shabu -
a pure flat white with little reflectance
-
a soft whitish calcite
Verb
-
write, draw, or trace with chalk