IllinoisyoudaoicibaDictYouDict[Illinois 词源字典]
U.S. territory created 1809; name is from a native Algonquian people who called themselves Inoca (1725), also written Ilinouek, Old Ottawa for "ordinary speaker." The modern form represents a 17c. French spelling, pronounced "ilinwe" at that time. Admitted as a state 1818.[Illinois etymology, Illinois origin, 英语词源]