Main Entry: 2freebase Function: noun : purified solid cocaine (as crack) in a form that is obtained by treating the powdered hydrochloride of cocaine with analkaloid base (as sodium bicarbonate) and that can be smoked or heated to produce vapors for inhalation;specifically: cocaine derived from its hydrochloride by treatment with ammoniaor a similar alkaloid solution followed by extraction with a solvent (as ether)
[free-beys] 
verb, -based, -bas⋅ing, noun Slang.