It is an inflection of buying. It means buying or purchasing food or market. In Colombia is the apocope of merchandise and market. Traders and the common people use it, most of the time has nothing to do with drugs as most insinuating it. This circumstance if it was exploited by crime and smugglers in order to pass unnoticed. Merchandise, market, food, grocery, Ranch supplies.
As said Calixto, " merca " It is cocaine in lunfardo. The story begins in the first half of the 20th century when, in Argentina, coca had a medicinal use, but because of its toxicity distribution was very controlled; The Merck laboratory produced it and was in hospital pharmacies. Despite this, she was often stolen and illegally sold for recreational use. And he was " said to assess their quality of Merck ". Later was like " the merc " and after " the merca " , by associating his name with the apocope of " merchandise ".
