[ 'kadəʊən ]
■ noun
1》 a member of a group of American Indian peoples formerly inhabiting the Midwest.
2》 the family of languages spoken by the ~s, which includes Pawnee, now all virtually extinct.
■ adjective relating to the ~s or their languages.
Origin
from Caddo (a ~ lang.) kaduhdacu , denoting a band belonging to this group, + -an .