Definition of "greenhead" [green•head]

• A male mallard duck. (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 gentleman with the stogie and the greenhead is inventor, Jeff Hajjar of SRM, maker of the Sure-Cycle spring kits and Terror Chokes."
• "There are more than 3,000 varieties of horse flies such as greenhead horsefly, striped horse fly and black horsefly found all over the world."
• "Yes | No | Report from greenhead13 wrote 4 weeks 19 hours ago ryan: im not gonna write you a love song cause you asked for it or you need one! greenhead: i heard that song before! it must be ryan nolan! of course ill comback!"