[sin-klair, sing- or, for 1, 2, 4, sin-klair, sing-] 
| 1. | Harry Ford, 1876–1956, U.S. oil businessman: a major figure in the Teapot Dome scandal. |
| 2. | May, 1865?–1946, British novelist. |
| 3. | Up⋅ton (Beall) [uhp-tuh n bel] , 1878–1968, U.S. novelist, socialist, and reformer. |
| 4. | a male given name: a family name taken from a French placename, Saint Clair. |
| Sin·clair (sĭn-klâr', sĭng-) American writer and reformer. His concern with social justice is apparent in his novels, including The Jungle (1906) and Boston (1928). |