U-boat

noun, slang

Definitions

Noun
  1. 1
    Any German submarine of the First or Second World War, or any Austro-Hungarian submarine of the First World War. historical
  2. 2
    military submarine operated by Germany during the First and Second World Wars wordnet
  3. 3
    A narrow utility cart with tall handles on both ends that is used to carry loads of retail products to be sold, so named because its shape is roughly that of a capital U.
  4. 4
    Nickname given to the General Electric Universal Series diesel-electric locomotives. slang

Etymology

Calque of German U-Boot.

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