freebase

English

Noun

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Free base

Wikipedia freebase (plural freebases)

1. (chemistry) The purified, dry form of an amine, especially an alkaloid natural product, that is normally used in solution.
2. This form of cocaine.

Verb

freebase (third-person singular simple present freebases, present participle freebasing, simple past and past participle freebased)

1. To purify such a drug by crystallization
2. To use such a drug by inhalation of the fumes given off when it is burnt