Definition of tartarian:
(adj) :
Of or relating to Tartary or the Tartars; Tartaric.
(adj) :
Pertaining to Tartarus; hellish, infernal.
(n) :
(dated) Any of various varieties of cherry. The Black Tartarian is a sweet cherry from Russia; the White Tartarian is a French variety of the early 1800s.
(n) :
(now rare) A Tartar.
(n) :
(now rare) The language of the Tartars; Tatar.