What is "kuro-siwo"

Japan current \Japan current\ A branch of the equatorial current of the Pacific, washing the eastern coast of Formosa and thence flowing northeastward past Japan and merging into the easterly drift of the North Pacific; -- called also Kuro-Siwo, or Black Stream, in allusion to the deep blue of its water. It is similar in may ways to the Gulf Stream.

Kuro-Siwo \Ku"ro-Siwo\, n. [Jap. kuroshio; kuro black + shio tide.] See Japan Current, above.