hairline

noun

hair·​line ˈher-ˈlīn How to pronounce hairline (audio)
1
: a very slender line: such as
a
: a tiny line or crack on a surface
a hairline bone fracture
b
: a fine line connecting thicker strokes in a printed letter
2
3
a
: a textile design consisting of lengthwise or crosswise lines usually one thread wide
b
: a fabric with such a design
4
a
: the outline of scalp hair especially on the forehead
b
: the way the hair frames the face
hairline adjective

Examples of hairline in a Sentence

The plate had a hairline running across it. He has a receding hairline.
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.
His receding hairline could no longer be disguised with styling products, and even his partner noticed how much the hair loss was accelerating. Matthew Kayser, USA Today, 8 Oct. 2025 Hairline Texture, Ingrowns, and Dark Spots—Without the Buildup Those of us who wear edge control, gels, or protective styles know the hairline is its own micro-climate. Larry Stansbury, Essence, 7 Oct. 2025 At Smile Hair Clinic, the hairline is planned according to the patient’s facial proportions, age group, and personal preferences. Lyssanoel Frater, IndyStar, 6 Oct. 2025 Last week, at the Glasgow stop of her Infinity Heart tour, Siwa unexpectedly ejected two fans from the show over a hoodie that featured Siwa photoshopped onto an egg, an image that appeared to be mocking her hairline. Shania Russell, Entertainment Weekly, 6 Oct. 2025 See All Example Sentences for hairline

Word History

First Known Use

1846, in the meaning defined at sense 1

Time Traveler
The first known use of hairline was in 1846

Browse Nearby Words

Cite this Entry

“Hairline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hairline. Accessed 26 Oct. 2025.

Kids Definition

hairline

noun
hair·​line ˈha(ə)r-ˌlīn How to pronounce hairline (audio)
ˈhe(ə)r-
1
a
: a very slender line
b
: a very thin crack on a surface
a hairline bone fracture
2
: the outline of the hair on the head and especially on the forehead
hairline adjective

Medical Definition

hairline

noun
hair·​line -ˈlīn How to pronounce hairline (audio)
: the outline of scalp hair especially on the forehead
hairline adjective

More from Merriam-Webster on hairline

Last Updated: - Updated example sentences
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