Definition of "bufflehead" []

• A small North American diving duck (Bucephala albeola) having black and white plumage and a densely feathered, rounded head. Also called butterball. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The term bufflehead refers to the bird's strangely bulbous head shape."
• "Similarly, a bufflehead – a small duck with a distinctive bulbous head – was spotted in a farm pond on the Lizard in Cornwall."
• "Bufflehead Bucephala albeolaThe bufflehead is a small diving duck that forages underwater, eating primarily aquatic plants and fish eggs."