theic|ˈθiːɪk| [f.mod.L. the-a tea + -ic 3: cf. theism2.] One addicted to immoderate tea-drinking, or who suffers from such excess; a tea-drunkard. 1886Medical News (U.S.) XLIX. 305 It is possible to be a ‘theic’ by profession or a ‘theic’ by passion.1899in Syd. Soc.Lex.