1. United States explorer who (with Meriwether Lewis) led an expedition from St. Louis to the mouth of the Columbia River; Clark was responsible for making maps of the area (1770-1838) • Syn: William Clark • Instance Hypernyms: explorer, adventurer 2. United States general who was Allied commander in Africa and Italy in World War II and was commander of the United Nations forces in Korea (1896-1984) • Syn: Mark Clark, Mark Wayne Clark • Instance Hypernyms: general, full general 3. United States psychologist (born in Panama) whose research persuaded the Supreme Court that segregated schools were discriminatory (1914-2005) • Syn: Kenneth Clark, Kenneth Bancroft Clark • Instance Hypernyms: psychologist 4. Canadian politician who served as prime minister (1939-) • Syn: Joe Clark, Charles Joseph Clark • Instance Hypernyms: politician, politico, pol, political leader