a concentrated form of cocaine for smoking, prepared by extracting, or freeing, the alkaloid, or base, from a salt of the drug
intransitive verb-·based·, -·bas·ing
to prepare or use such a form of (cocaine)
Also written free-base
verbfree·based, free·bas·ing, free·bas·es, or free-based or free-bas·ing or free-bas·es
- 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.
- To use (cocaine purified in this way) by smoking it or by inhaling the fumes after burning it.
To prepare or use cocaine purified in this way.
Cocaine purified by this method.