- Characteristic of, or like, a bulldog; stubborn; as,
bulldog courage; bulldog tenacity.
2 . Bulldog
[ n.]
- A variety of dog, of remarkable ferocity, courage, and
tenacity of grip; -- so named, probably, from being formerly employed
in baiting bulls. - A refractory material used as a furnace lining, obtained
by calcining the cinder or slag from the puddling furnace of a rolling
mill.