Noun | 1. | ![]() LSD, lysergic acid diethylamide - a powerful hallucinogenic drug manufactured from lysergic acid angel dust, phencyclidine, phencyclidine hydrochloride, PCP - a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen psilocin, psilocybin - a hallucinogenic compound obtained from a mushroom consciousness-altering drug, mind-altering drug, psychoactive drug, psychoactive substance - a drug that can produce mood changes and distorted perceptions salvinorin - a hallucinogen obtained from Salvia divinorum |