Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun missouri_river
1 sense of missouri river
Sense 1
Missouri, Missouri River -- (the longest river in the United States; arises in Montana and flows southeastward to become a tributary of the Mississippi at Saint Louis; "The Missouri and Mississippi Rivers together form the third longest river in the world")
INSTANCE OF=> river -- (a large natural stream of water (larger than a creek); "the river was navigable for 50 miles")