cocainist|kəʊˈkeɪnɪst| [f. cocaine + -ist.] One addicted to the use of cocaine. 1908Westm.Gaz. 17 Jan. 7/4 The cocainist..experienced singular elation.1927Glasgow Herald 30 Aug. 9 There is actually in Moscow a children's narcotic dispensary for the treatment of child cocainists.