Definition of "Marx" :

noun: founder of modern communism; wrote the Communist Manifesto with Engels in 1848; wrote Das Kapital in 1867 (1818-1883)

noun: United States comedian; one of four brothers who made motion pictures together (1890-1977)

noun: United States comedian; one of four brothers who made motion pictures together (1891-1961)

noun: United States comedian; one of four brothers who made motion pictures together (1893-1964)

noun: United States comedian; one of four brothers who made motion pictures together (1901-1979)