: a German submarine

Examples of U-boat in a Sentence

Recent Examples on the Web One idea was to send the art to Canada, but that plan was turned down due to concerns over U-boat attacks during transportation. Julia Binswanger, Smithsonian Magazine, 7 May 2024 The object of the mission is to infiltrate the Spanish port of Fernando Po, off West Africa, destroy the German attack boats and sink the Duchessa, the Italian ship carrying supplies and equipment vital to U-boat operations. David Rooney, The Hollywood Reporter, 16 Apr. 2024 Take down the biggest Nazi U-boat undetected within a designated timeframe. The Arizona Republic, 16 Apr. 2024 During raids, American crews of ten—including a pilot, co-pilot, navigator, radio operator, bombardier and gunners—engaged in daylight precision bombing, focusing on strategic targets like German aircraft factories, ball-bearing plants and U-boat pens. Meilan Solly, Smithsonian Magazine, 23 Jan. 2024 Back then, however, the codebreakers in Bletchley Park were unable to decrypt U-boat radio traffic, due to the introduction of the newer and more complex four-rotor Enigma code machine, an upgrade from the three-rotor model. Cathy Alter, WIRED, 27 Aug. 2023 Drive along its coastline to find tiny fishing villages, old Yugoslav military U-boat bunkers, and Veli Rat – the Adriatic’s highest lighthouse at 135 feet. Mary Novakovich, CNN, 5 June 2023 Marine scientists from the University of Southern Mississippi are a key part of the search, which is using coordinates provided by the German U-boat as a starting point. Mark Price The Charlotte Observer (tns), al, 19 Apr. 2023 Markets glimmer with a startling variety, from baby cuttlefish to U-boat-sized tuna. Paul Ames, CNN, 5 Mar. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'U-boat.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


translation of German U-boot, short for Unterseeboot, literally, undersea boat

First Known Use

1914, in the meaning defined above

Time Traveler
The first known use of U-boat was in 1914

Dictionary Entries Near U-boat

Cite this Entry

“U-boat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/U-boat. Accessed 20 May. 2024.

Kids Definition


: a German submarine

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