"Bulldog, a variety of the common dog, remarkable for its short, broad muzzle, and the projection of its lower jaw, which causes the lower front teeth to protrude beyond the upper." -Vaughan, 1906

Bulldog

"Bulldog, a variety of the common dog, remarkable for its short, broad muzzle, and the projection of…

A common breed of dog.

Bull-dog

A common breed of dog.