noun
also os·ti·ak ˈästēˌak
( -s )
Usage: capitalized
Etymology: Russian Ostyak, from Ostyak āsyakh dwellers on the Ob river, from Ās Ob river, Union of Soviet Socialist Republics
1. : a member of any of a group of the Paleo-Asiatic nomadic Finnic peoples of the Ural mountain regions and western Siberia
2. : the Finno-Ugric language of the Ostyak people — see uralic languages table