Noun | 1. | ![]() Formosa, Taiwan - an island in southeastern Asia 100 miles off the coast of mainland China in the South China Sea Nationalist China, Republic of China, Taiwan, China - a government on the island of Taiwan established in 1949 by Chiang Kai-shek after the conquest of mainland China by the Communists led by Mao Zedong Singapore Island, Singapore - an island to the south of the Malay Peninsula Gulf of Siam, Gulf of Thailand - an arm of the South China Sea between Indochina and the Malay Peninsula Pacific, Pacific Ocean - the largest ocean in the world |