pigboat
- n a submersible warship usually armed with torpedoes
- While the comic-strip heroes teetered on various brinks, Venezuelan editors heard with dismay that a ship with a supply of mats had been sent to the bottom by a pigboat.
- Barney Connett's homemade, one-man pigboat is twelve feet long, weighs 1,000 pounds, was put together with automobile parts and miscellaneous junk at a cost of $4,000, is powered .
- The Borie found another huge pigboat on the surface.