"A drug with properties and effects similar to a known hallucinogen or narcotic but having a slightly altered chemical structure, especially such a drug created in order to evade restrictions against illegal substances."
(Answers.com)
A synthetic chemical (Often produced by a high-techlab) the purpose of which is to produce a reliable state of intoxication (As opposed to plant-based inebrients, whos effects may vary greatly from one individual to another)
Ecstacy (MDMA), BZ (A "superhallucinogen" concocted by the CIA), CC3P, Methamphetamine, MPPP.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".