Stanley n 1: United States inventor who built a steam-powered automobile (1849-1918) [syn: {Francis Edgar Stanley}] 2: Welsh journalist and explorer who led an expedition to Africa in search of David Livingstone and found him in Tanzania in 1871; he and Livingstone together tried to find the source of the Nile River (1841-1904) [syn: {Henry M. Stanley}, {Sir Henry Morton Stanley}, {John Rowlands}]