Prison U-boat Synonyms

We can't find synonyms for the phrase "Prison U-boat", but we have synonyms for terms, you can combine them.

PU abbreviation

PU is an abbreviation for Prison U-boat
What does PU stand for?
PU stands for "Prison U-boat"

Definitions for Prison


Definitions for U-boat


  • (noun) a submersible warship usually armed with torpedoes