a small North American duck, Bucephala albeola, the male of which has bushy head plumage.
- buf·fle·head·ed, adjective
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British Dictionary definitions for bufflehead
a small North American diving duck, Bucephala (or Glaucionetta) albeola : the male has black-and-white plumage and a fluffy head: Also called: butterball
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012