The term MISSISSIPPI MARSH is composed of two words: 'Mississippi' and 'MARSH'. The first word, Mississippi, is a state in the United States located in the southern region of the country. It is bordered by Tennessee to the north, Alabama to the east, and Louisiana to the south. The second word, MARSH, is an area of low-lying land that is often flooded or saturated with water. The combination of these two words, Mississippi MARSH, refers to a type of wetland found in the state of Mississippi. The crossword solution for this term is BAYOU, which is a slow-moving body of water found in the wetlands of the southern United States.