A North American duck (Aythya americana), the male of which has black and gray plumage and a reddish head.(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.
Use "redhead" in a sentence
"If the redhead is his sister, it might make sense to refer to her as his sister in the first paragraph."
"The seller points this out to Brewer and the family agrees this redhead is the one."
"You guys all realize that the redhead is also played by Avril, right?"