Dewey n 1: United States librarian who founded the decimal system of classification (1851-1931) [syn: {Melvil Dewey}, {Melville Louis Kossuth Dewey}] 2: a United States naval officer remembered for his victory at Manila Bay in the Spanish-American War [syn: {George Dewey}, {Admiral Dewey}] 3: United States pragmatic philosopher who advocated progressive education (1859-1952) [syn: {John Dewey}]