Staf·ford·shire bull terrier 
(stăfərd-shîr′, -shər)
(stăfərd-shîr′, -shər)n.
A dog of a small breed developed in England by crossing bulldogs and terriers. Originally bred for fighting, it has a muscular body, broad head, short legs, and short smooth coat. It is often referred to as a pit bull.
[After Staffordshire, a county of west-central England.]