The largest city in South Dakota, a commercial and industrial center in the southeastern part of the state, on the Big Sioux River; population 154,997 (est. 2008).
Definition of Sioux Falls in US English:
Sioux Falls
proper nounsuːˈfɔːlz
The largest city in South Dakota, a commercial and industrial center in the southeastern part of the state, on the Big Sioux River; population 154,997 (est. 2008).