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actualise
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concave shape
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pigboat
pigboat /ˈpɪgboʊt/
noun
-
A submersible warship usually armed with torpedoes
(
pigboat
, sub
[Informal] , U-boat
, submarine
)
a submersible warship usually armed with torpedoes
The USS Nautilus was the world's first operational nuclear-powered submarine
The USS Nautilus was the world's first operational nuclear-powered submarine
