freebase

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

The freebase is heated in a retort, foil, or other container and the vapor is inhaled as the freebase vaporizes.

On June 9, 1980, national attention was brought to cocaine freebasing when comedian Richard Pryor suffered third degree burns allegedly while using a butane torch to heat cocaine freebase he had prepared with ether.

The purified, dry form of certain illegal drugs, especially cocaine.

That day, I gave a class on making and using freebase. This was one thing that was to be done perfectly, or you could end up with glass and freebase all over you.

To purify a drug by crystallization.

To use a purified drug, especially cocaine, by heating it and inhaling the fumes produced.

Richard, one of my friends in L.A., claimed to have invented freebasing— smoking cocaine in its base form—though it's likely that what he meant was that he introduced a whole bunch of people to the process.

With his nostrils ravaged, Crosby turned to drinking Cocaine mixed in glasses of wine, then took to smoking it by the novel technique of freebasing, where the drug is distilled down to its purest form through a process of filtration using ammonia and ether.