A shoe with a strap that wraps around the back of the heel.(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 "slingback" in a sentence
"For the occasion she donned a wrinkled and ruched fuchsia and black dress with slingback heels."
"She accessorized with slingback, peep-toe heels and silver jewelry."
"The actress paired her legwear with a belted, (what-looks-like) leather, black dress and slingback, peep-toe heels."