Big Sioux River
- proper noun
- Fishing is a popular activity along the Big Sioux River during the summer months.
Examples
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The Big Sioux River flooded several towns after heavy spring rains.
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The Big Sioux River serves as a natural border between parts of Iowa and South Dakota.
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The Big Sioux River flows through South Dakota.
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Can you tell me more about the Big Sioux River?
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The Big Sioux River flows gracefully through the state of South Dakota.
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Many species of fish can be found in the waters of the Big Sioux River.
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The Big Sioux River is a key waterway that connects Sioux City, Iowa to South Dakota.
Surface Forms
Morphology
The name is compositionally built from literal words: 'big' (large) + 'Sioux' (the Native American group) + 'river' (a watercourse), so a learner who knows the constituents can infer it refers to a (relatively large) river associated with the Sioux. As a descriptive proper name the exact geographic details are arbitrary but the basic meaning is directly derivable and follows common naming patterns cross‑linguistically.
Etymology
Big Sioux River comes from the Sioux people who lived along it long ago. The word Big was added to show it is larger than the nearby Little Sioux River, so the name tells you both who lived there and that it is the bigger river.