n.
A white swan (Cygnus olor) native to Europe and Asia and widely introduced elsewhere, having an orange bill with a black knob at the base and being much less vocal than most swans.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
