U-boats
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Lusitania was sunk by a U-boat. Eventually, U-boat attacks on neutral ships drew the United States into the war.
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.
First deployed during World War Two to locate German U-boats, they became central to Cold War submarine-tracking and continue to be used in both military surveillance and search-and-rescue operations.
From BBC ● Nov. 23, 2025
If the story of Germany’s U-boats was one mostly of failure, the U.S.
From The Wall Street Journal ● Nov. 7, 2025
Guy Ritchie’s latest follows a group of British special forces who took on German U-boats during World War II — and helped inspire James Bond.
From Los Angeles Times ● Jul. 23, 2024
Vegemite has German U-boats to thank for its invention.
From Salon ● Jul. 10, 2023
I guess I was waiting for the U-boats to send a shell toward Willemstad.
From "The Cay" by Theodore Taylor
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
