- the sea or ocean beyond the three-mile limit or territorial waters of a country.
- Usually high seas.
- the open, unenclosed waters of any sea or ocean; common highway.
- Law.the area within which transactions are subject to court of admiralty jurisdiction.
Origin of high sea
before 1100; Middle English; Old English hēah-sǣ
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (sometimes singular) the open seas of the world, outside the jurisdiction of any one nation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.