pit bull Any of several cross-breeds of bulldog and terrier. Examples include the American pit bull terrier, bull terrier, and Staffordshire bull terrier. The English bull terrier, measuring c.40cm (16in) at the shoulder, was originally developed for bull-baiting. The American pit bull terrier, not an official breed, is c.50cm (20in) at the shoulder and was bred as a aggressive watchdog. Weight: up to 23kg (50lb).

pit bull (in full pit bull terrier) • n. a dog of an American variety of bull terrier, noted for its muscular build and often associated with ferocity.