The slang term for a drug, as traded on the streets.
2001, Andrew Campbell, The Australian Illicit Drug Guide, Black Inc., →ISBN, page 100:
Ecstasy is the commercially inspired American street name of MDMA (3,4-methylenedioxymethylamphetamine), a unique psychostimulant drug with both stimulant and hallucinogenic effects.
2008 January 19, Peter Sagal (host), Wait, Wait...Don’t Tell Me!, National Public Radio
Police quickly determined that the street name for holy sand was “cocaine” and said that the man’s arrest has made them think twice about the holy tic tacs and holy parsley they’ve seen lately.