SiberiayoudaoicibaDictYouDict[Siberia 词源字典]
region in northwestern Asia, the name said to come from Sibir, ancient Tatar fortress at the confluence of the Tobol and Irtysh rivers. As a typical place of miserable banishment, it is attested from 1841. Related: Siberian.[Siberia etymology, Siberia origin, 英语词源]