Dictionary
Siouan
noun Siou·an \ˈsü-ən\
Definition of SIOUAN
1
: an American Indian language family of central and southeastern North America
2
: a member of any of the peoples speaking Siouan languages
See Siouan defined for kids ADVERTISEMENT
First Known Use of SIOUAN
1885
Seen & Heard
What made you want to look up Siouan? Please tell us where you read or heard it (including the quote, if possible).