intransitive verb. To purify (cocaine) by treating its powdered hydrochloride form with an alkaloid solution such as ammonia and then using a heated solvent to separate out the precipitate.

intransitive verb. To use (cocaine purified in this way) by smoking it or by inhaling the fumes after burning it.

intransitive verb. To prepare or use cocaine purified in this way.

noun. Cocaine purified by this method.

noun. The purified, dry form of an amine, especially an alkaloid natural product, that is normally used in solution.

noun. This form of cocaine.

verb. To purify such a drug by crystallization

verb. To use such a drug by inhalation of the fumes given off when it is burnt

"6 A second dose administered within an hour will also cause less of an intense response. 12 For these reasons cocaine users will take the drug repeatedly every 30 to 40 minutes if available. 7 It has been reported that the craving for another dose after smoking freebase is more intense than after I.V. cocaine HCI and explains the high addiction potential of freebasing. 10"

freebasing