HALOPERIDOL Meaning of HALOPERIDOL in English [ ˌhalə(ʊ)'pɛrɪdɒl , ˌheɪlə(ʊ)- ]■ noun Medicine a drug used chiefly in the treatment of psychotic conditions.Origin1960s: blend of halogen and piperidine + -ol . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004