high seas

high seas idiom
Open waters of an ocean or sea, beyond the territorial jurisdiction of a country. For example, Commercial fishermen are being forced to go out on the high seas in order to make a living. [c. 1100]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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