Origin: < Ger U-boot, abbrev. of Unterseeboot, undersea boat
See U-boat in American Heritage Dictionary 4
Origin: Translation of German U-Boot
Origin: , short for Unterseeboot
Origin: : unter, under (from Middle High German under, from Old High German untar; see ṇdher- in Indo-European roots)
Origin: + See, sea (from Middle High German sē, from Old High German)
Origin: + Boot, boat.
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