U-boat definition
A submarine of the German navy.
noun
A German submarine in service during WWI or WWII.
noun
Advertisement
Other Word Forms
Noun
Singular:
u-boat
Plural:
u-boatsOrigin of u-boat
- Translation of German U-Boot short for Unterseeboot unter under (from Middle High German under) (from Old High German untar n̥dher- in Indo-European roots) See sea (from Middle High German sē) (from Old High German) Boot boat
From American Heritage Dictionary of the English Language, 5th Edition