Ostic

• (a.) Pertaining to, or applied to, the language of the Tuscaroras, Iroquois, Wyandots, Winnebagoes, and a part of the Sioux Indians.
Found on http://thinkexist.com/dictionary/meaning/ostic/

Ostic

Os'tic adjective [ From North American Indian oshtegwon a head.] Pertaining to, or applied to, the language of the Tuscaroras, Iroquois, Wyandots, Winnebagoes, and a part of the Sioux Indians. Schoolcraft.
Found on http://www.encyclo.co.uk/webster/O/39
No exact match found