ˌhigh ˈseas noun the high seas literary the areas of ocean around the world that do not belong to any particular country
[TahlilGaran] Dictionary of Contemporary English ▲
high seas n. phr. The open ocean, not the waters near the coast.
It was a big powerful liner built to sail on the high seas. The ships of every country have the right to sail on the high seas. [TahlilGaran] English Idioms Dictionary ▲