flat iron

noun

1
: a device used for straightening hair by pressing and pulling sections between two heated metal or ceramic, flat, rectangular plates
2
usually flatiron old-fashioned : iron sense 2a

Examples of flat iron in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Offerings include prime filets, ribeye, New York strip and flat iron. Susan Selasky, Freep.com, 9 Oct. 2025 Clean your straightener, curling iron A cotton ball or swab dipped in rubbing alcohol is the easiest way to clean a flat iron or curling iron. Cody Godwin, USA Today, 5 Oct. 2025 Running a flat iron through—the fibers respond effortlessly, so hot tools deliver sleek results without constant upkeep or excessive heat. Noel Cymone Walker, StyleCaster, 25 Sep. 2025 BaBylissPro Nano Titanium Mini Flat Iron Another travel-size best-seller, the BaBylissPRO mini flat iron has a titanium plate measuring six inches long and half an inch wide. Olivia Young, Travel + Leisure, 28 Aug. 2025 See All Example Sentences for flat iron

Word History

First Known Use

1743, in the meaning defined at sense 2

Time Traveler
The first known use of flat iron was in 1743

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Cite this Entry

“Flat iron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flat%20iron. Accessed 17 Oct. 2025.

Kids Definition

flatiron

noun
flat·​iron -ˌī(-ə)rn How to pronounce flatiron (audio)
Last Updated: - Updated example sentences
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