Open English Wordnet
Nouns
(n)Missouri, Show Me State, MO, Mo.a midwestern state in central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union
(n)Missouri, Missouri Riverthe 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”