Coast Guard

Coast Guard

noun
1.
U.S. Military. a military service under the Department of Transportation, which in peacetime enforces maritime laws, saves lives and property at sea, and maintains aids to navigation, and which in wartime may be placed under the Navy Department to augment the navy.
2.
(lowercase) any similar organization for aiding navigation, preventing smuggling, etc.
3.
(lowercase) . Also called coastguardsman. a member of any such organization.

Origin:
1825–35

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica
Encyclopedia

coast guard

a force, usually naval, that enforces a nation's maritime laws and assists vessels wrecked or in distress on or near its coasts. Such forces originated during the early 19th century as a restraint on smuggling.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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