Merriam-Webster Collegiate Dictionary - territorial waters

 noun plural  Date: 1841 the waters under the sovereign jurisdiction of a nation or state including both marginal sea and inland waters TERRITORIAL  I. adjective  Date: 1625  1.  a. nearby, local  b. serving outlying areas ; regional  2.  a. of or relating to a territory ~ government  b. of or relating to or organized chiefly for home defense a ~ army  c. of or relating to private property  3.  a. of or relating to an assigned or preempted area ~ commanders  b. exhibiting or involving ~ity ~ birds ~ salespeople  • ~ly adverb  II. noun  Date: 1907 a member of a ~ military unit