U-boat

U-boat (ybt)

n.

A submarine of the German navy.

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[Translation of German U-Boot, short for Unterseeboot : unter, under (from Middle High German under, from Old High German untar; see dher- in Indo-European roots) + See, sea (from Middle High German s, from Old High German) + Boot, boat.]

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U-boat

Noun

a German submarine [German Unterseeboot undersea boat]

Thesaurus

Noun

1.

U-boat - a submersible warship usually armed with torpedoes pigboat, submarine, sub attack submarine - a military submarine designed and armed to attack enemy shipping auxiliary research submarine - a submarine for research purposes conning tower - a raised bridge on a submarine; often used for entering and exiting escape hatch - hatchway that provides a means of escape in an emergency fleet ballistic missile submarine - a submarine carrying ballistic missiles nautilus, nuclear submarine, nuclear-powered submarine - a submarine that is propelled by nuclear power periscope - an optical instrument that provides a view of an otherwise obstructed field schnorchel, schnorkel, snorkel breather, breather, snorkel - air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time asdic, echo sounder, sonar - a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee" submersible warship, submersible - a warship designed to operate under water