- relating to or denoting a group of American Indian peoples formerly inhabiting the Midwest, or their languages, now all virtually extinct（与）卡多人（有关）的（旧时居住于美国中西部的美洲印第安人, 现几乎完全绝种）; （与）卡多语（有关）的。
1
- a member of any of these peoples卡多人。
2
- mass noun the family of languages spoken by these peoples, which includes Pawnee and may be related to Siouan and Iroquoian卡多语系（包括波尼人所说的卡多语, 可能与苏语和易洛魁语系有关）。
词源
from Caddo (a language of this family) kaduhdacu, denoting a band belonging to this group, + -AN.