| Noun | 1. | White River - a tributary of the Mississippi River that flows southeastward through northern Arkansas and southern MissouriMissouri, Show Me State, 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 river - a large natural stream of water (larger than a creek); "the river was navigable for 50 miles" | |