or free-base

[ free-beys ]
/ ˈfriˌbeɪs /

verb (used with object), free·based, free·bas·ing.

to purify (cocaine) by dissolving in ether, sodium hydroxide, etc., and filtering off the precipitate.
to ingest (freebased cocaine).

verb (used without object), free·based, free·bas·ing.

to freebase cocaine.


freebased cocaine.

Nearby words

  1. free-tailed bat,
  2. free-thinker,
  3. free-to-air,
  4. free-trade zone,
  5. free-trader,
  6. freebie,
  7. freeboard,
  8. freeboard deck,
  9. freeboard length,
  10. freeboot

Origin of freebase

First recorded in 1975–80; free + base1

Related formsfree·bas·er, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for freebase

British Dictionary definitions for freebase


/ (ˈfriːˌbeɪs) /


slang cocaine that has been refined by heating it in ether or some other solvent

verb freebases, freebasing or freebased

to refine (cocaine) in this way
to smoke or inhale the fumes from (refined cocaine)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for freebase


1980 (noun and verb), in reference to cocaine. As a chemical process, it returns a salt form of an alkaloid to its pure form. Related: Freebased; freebasing.

Online Etymology Dictionary, © 2010 Douglas Harper