EQUILIBRIST Meaning of EQUILIBRIST in English [ ɪ'kwɪlɪˌbrɪst , i:'kwɪlɪ- , ɛk'wɪ- ]■ noun dated an acrobat, especially a tightrope walker.OriginC18: from equilibrium + -ist . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004