U-boat

noun
\ ˈyü-ˌbōt How to pronounce U-boat (audio) \

Definition of U-boat

: a German submarine

First Known Use of U-boat

1914, in the meaning defined above

History and Etymology for U-boat

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

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More Definitions for U-boat

U-boat

noun

English Language Learners Definition of U-boat

: a German submarine