city in S China, on Hainan island; capital of Hainan province: pop. 266,000
See Haikou in American Heritage Dictionary 4
(hīˈkouˈ, -kōˈ)
A city of southern China on Hainan Island in the South China Sea. A seaport and industrial center, it is the capital of Hainan province. Population: 513,000.