A woman's wide-brimmed bonnet with a flap at the back to protect the neck from the sun.(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 "sunbonnet" in a sentence
"A crossdressing Marlon Brando shooting a Creedmore is pretty out there (not to say old Marlon in a sunbonnet is any kind of pretty)."
"A young girl came on, a sunbonnet hanging down her back, her apron caught up in front and filled with grain which she threw to the buttering fowls."
"I called it her preacher lady hat but I guess you could say it was a sunbonnet made for two."