Definition of Big Sioux River in English:

Big Sioux River

Syllabification: Big Sioux Riv·er

Entry from US English dictionary

A river in South Dakota and Iowa that flows for 420 miles (680 km) to the Missouri River.

Definition of Big Sioux River in:

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Word of the day inamorata
Pronunciation: ɪˌnaməˈrɑːtə
noun
a person's female lover