Marsh

(noun) low-lying wet land with grassy vegetation; usually is a transition zone between land and water. Synonyms: marsh, marshland, fen, fenland. Examples: "Thousands of acres of marshland." "The fens of eastern england."

(noun) United States painter (1898-1954). Synonyms: Reginald Marsh.

(noun) New Zealand writer of detective stories (1899-1982). Synonyms: Ngaio Marsh.