noun
- Plural of pigboat; submarines, especially those used in military service.
Usage: informal; chiefly historical; U.S. naval slang
Examples
- During World War II, American pigboats played a crucial role in the Pacific theater.
- The crew of the pigboats trained extensively before deployment.
- Naval historians often study the tactics used by pigboats in submarine warfare.
- The museum displayed artifacts from several famous pigboats of the Cold War era.