An illicit substance (such as cocaine or heroin), the business of which is a major source of violence, oppression, and murder. Similar to a blood diamond but for drugs.

The term is often used by those trying to be ethical about the drugs they do.
person 1: You guys ever try coke?
person 2: Nah, I prefer weed. Coke is too much of a blood drug imo.
by jackson falls August 27, 2017
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