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(n.)
- In America, several species of Amiurus; -- called also catfish, horned pout, and bullpout.
Bullhead(n.)
- A marine fish of the genus Cottus; the sculpin.
Bullhead(n.)
- The black-bellied plover (Squatarola helvetica); -- called also beetlehead.