Bullhead :: Bullhead (n.) A fresh-water fish of many species, of the genus Uranidea, esp. U. gobio of Europe, and U. Richardsoni of the United States; -- called also miller's thumb..
Bullhead :: Bullhead (n.) In America, several species of Amiurus; -- called also catfish, horned pout, and bullpout..
Bullhead :: Bullhead (n.) A marine fish of the genus Cottus; the sculpin.
Bullhead :: Bullhead (n.) The black-bellied plover (Squatarola helvetica); -- called also beetlehead.