a river flowing NE from E Wyoming to the Missouri River in South Dakota. About 500 miles (800 km) long.
TAKE ROUND 2 OF OUR PSAT VOCABULARY QUIZ!
Here is our second set of teacher-selected PSAT vocabulary words. Do you know the meanings of these terms?
Question 1 of 10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020