pit bull

American  

[pit bool] / ˈpɪt ˌbʊl /

Informal, pittie or pitbull

noun

1. a stocky, muscular dog with a broad skull and a smooth coat, belonging to an informal category of purebred and mixed-breed dogs that includes the American Staffordshire terrier, the Staffordshire bull terrier, and sometimes the American bulldog or boxer.

2. Also called American pit bull terrier.  American Staffordshire terrier.

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Etymology

Origin of pit bull

First recorded in 1925–30; pit ¹ ( def. ) (in the sense “enclosure for staging animal fights”) + bull(dog) ( def. )