MissouriyoudaoicibaDictYouDict[Missouri 词源字典]
originally a name for a group of native peoples among Chiwere (Siouan) tribes, from an Algonquian word recorded c. 1700, literally "people of the big canoes." The expression I'm from Missouri, you'll have to show me is attested from at least c. 1880. Related: Missourian.[Missouri etymology, Missouri origin, 英语词源]