U-boat /ˈjuː bəʊt $ -boʊt/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: Translation of German u-boot , from unterseeboot 'under-sea-boat' ]
a German ↑ submarine , especially one that was used in the Second World War
U-boat /ˈjuː bəʊt $ -boʊt/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: Translation of German u-boot , from unterseeboot 'under-sea-boat' ]
a German ↑ submarine , especially one that was used in the Second World War
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012