noun International Law.
the limit of the marine belt of three miles (4.8 km), which is included within the jurisdiction of the state possessing the coast.
Origin of three-mile limit
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
international law the range of a nation's territorial waters, extending to three nautical miles from shore
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