transitive. To use (alcohol, etc.) excessively; to use (a drug) without medical justification.

slang. To swallow or take (a drug); esp. in to drop acid (cf. acid, adj. n.compounds 2). slang.

colloquial. transitive. Originally U.S. To take (a hallucinogenic or other drug); to smoke (marijuana). Also: to drink (alcohol), esp. habitually.

transitive. spec. To take (a drug) excessively, improperly, or for non-therapeutic purposes. Cf. abuse, v. 1a.