freebase

Noun

 * 1)  The purified, dry form of an amine, especially an alkaloid natural product, that is normally used in solution.
 * 2) * 2007, Jared Ledgard, A Laboratory History of Narcotics, Volume 1: Amphetamines and Derivatives, page 108,
 * Note: this freebase methedrine will actually be a mixture of the DL and L-forms, from which the L-form is the most common used in the preparation of methamphetamine.
 * 1)  The purified, dry form of certain illegal drugs, especially cocaine.
 * Note: this freebase methedrine will actually be a mixture of the DL and L-forms, from which the L-form is the most common used in the preparation of methamphetamine.
 * 1)  The purified, dry form of certain illegal drugs, especially cocaine.

Verb

 * 1) To purify a drug by crystallization.
 * 2) To use a purified drug, especially cocaine, by heating it and inhaling the fumes produced.