Coast Guard
Americannoun
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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.
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(lowercase) any similar organization for aiding navigation, preventing smuggling, etc.
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Also called coastguardsman. (lowercase) a member of any such organization.
Etymology
Origin of Coast Guard
First recorded in 1825–35
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
At a nearby beach resort, a high-speed Coast Guard vessel plied the waters for two people still missing after swimming in waters that churned violently as the quake struck.
From Barron's • Jun. 9, 2026
Coast Guard initially reported a shipwrecked sailor may have sparked the blaze after firing flares for help.
From Los Angeles Times • Jun. 5, 2026
Coast Guard Academy commencement, a journalist asked the president what he thought of Mr. Pratt.
From The Wall Street Journal • May 29, 2026
"We tried to find them, mark their position, and give it to the US Coast Guard so they could rescue them," Basulto, 85-year-old leader of Brothers to the Rescue, told BBC Mundo.
From BBC • May 20, 2026
A radio expert with the Coast Guard, Jones had been trained by William in the early 1930s.
From "The Woman All Spies Fear" by Amy Butler Greenfield
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
