Ouachita

Etymology
.

Proper noun

 * 1) A Native American tribe who lived along the Ouachita River in Louisiana, affiliated with and now subsumed into the Caddo.

Usage notes
The humorous pronunciation is imitative of a supposedly common mispronunciation, as a speaker unfamiliar with the word may liken it to O-U-acheeta. Thus, the word can act as a shibboleth.

Proper noun

 * 1)  Native American tribe