angel dust

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Phencyclidine.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Phencyclidine, a type of dissociative anesthetic.
• noun Ireland, slang clenbuterol, a banned growth hormone formerly used in animal feedlots.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen