The drug known as angel dust is what?

Angel dust is a common street name for the drug phencyclidine, better known as PCP. This substance was originally developed in the 1950s as an anesthetic but was later discontinued for human use due to its troubling side effects, which include hallucinations and dissociative effects. PCP can be smoked, snorted, or ingested, and it is known for inducing feelings of detachment from reality, as well as aggressive behavior in some users.

The other drugs listed do not align with the common understanding of what angel dust refers to. Methamphetamine, heroin, and cocaine each have distinct effects and chemical structures that differ significantly from PCP. Meth is a powerful stimulant, heroin is an opioid, and cocaine is derived from the coca plant and primarily acts as a stimulant as well. Therefore, the identification of angel dust as PCP is accurate and reflects its established place in drug taxonomy.