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[yoo-boht] /ˈyuˌboʊt/
a German submarine.
Origin of U-boat
1910-15; < German U-Boot, short for Unterseeboot literally, undersea boat Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for U-boat
Contemporary Examples
Historical Examples
  • The U-boat could not be coped with by the building of swarms of submarines.

    Inventions of the Great War A. Russell (Alexander Russell) Bond
  • There was that one which was of the first to cross over for the U-boat hunting game.

    The U-boat hunters James B. Connolly
  • Also, they arranged that balmy life-raft and U-boat business this afternoon.

    Dave Dawson at Casablanca Robert Sydney Bowen
  • The U-boat man with nerve enough to attack a destroyer is a good one.

    The U-boat hunters James B. Connolly
  • The enemy stormed like a wild bull against the iron wall that kept him at a distance from our U-boat base.

    Now It Can Be Told Philip Gibbs
  • Then a large U-boat came boldly to the surface and opened fire.

    Submarine Warfare of To-day Charles W. Domville-Fife
British Dictionary definitions for U-boat


a German submarine, esp in World Wars I and II
Word Origin
from German U-Boot, abbreviation for Unterseeboot, literally: undersea boat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for U-boat

1916 (said to have been in use from 1913), partial translation of German U-Boot, short for Unterseeboot, literally "undersea boat."

Online Etymology Dictionary, © 2010 Douglas Harper
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