Webster’s Revised Unabridged Dictionary · 1913
Bufflehead
Buf′fle·head′ (·hĕd′), n. [Buffle + head.] 1. One who has a large head; a heavy, stupid fellow. [Obs.]
What makes you stare so, bufflehead? Plautus (trans. 1694).
2. (Zoöl.) The buffel duck. See Buffel duck.