big diomede

noun

1. See under Diomede Islands.

plural noun

1. two islands in Bering Strait, one belonging to the Russian Federation (Big Diomede), about 15 sq. mi. (39 sq. km), and one belonging to the U.S. (Little Diomede), about 4 sq. mi. (10 sq. km): separated by the International Date Line.

pl n

1. two small islands in the Bering Strait, separated by the international date line and by the boundary line between the US and Russia