Submitted by György Chityil ... on Fri, 01/19/2018 - 20:16 Hierarchy: NounDescription: {{slang|pejorative}} A person who uses the hallucinogenic drug LSD.Ngram: acidheadNgram Text: acidheadSource: WiktionaryIssue: 0Wiktionary tag: pejorativeNgram Count: 1