CIRCASSIAN Meaning of CIRCASSIAN in English [Cir.cas.sian] n [Circassia, region of the Caucasus] (1555) 1: a member of a group of peoples of the northwestern Caucasus 2: the language of the Circassian peoples -- Circassian adj Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012