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
Male-pattern baldness, also known as androgenic alopecia, causes hair loss on the scalp or a receding hairline.
—
Josh Hammer, MSNBC Newsweek, 1 Apr. 2025
In the latest episode of the brothers' New Heights podcast, released Wednesday, March 5, the duo shared some back-and-forth about their respective hairstyles — and hairlines — initially sparked by a bit of light ribbing from Travis.
—Bailey Richards, People.com, 5 Mar. 2025
While the Whitney Houston bob was just a bad match for her face, almost all of her wigs have had something wrong with them this year, the biggest cardinal sin being that they were being lazily placed behind her hairline with minimal attempt to blend.
—Shamira Ibrahim, Vulture, 3 Feb. 2025
Enriched with ingredients that promote hair growth, like castor oil, the hairline looks and feels stronger with every use.
—Jailynn Taylor, Allure, 2 Apr. 2025
See All Example Sentences for hairline
Examples are automatically compiled from online sources to
show current usage.
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Josh Hammer, MSNBC Newsweek, 1 Apr. 2025
In the latest episode of the brothers' New Heights podcast, released Wednesday, March 5, the duo shared some back-and-forth about their respective hairstyles — and hairlines — initially sparked by a bit of light ribbing from Travis.
—Bailey Richards, People.com, 5 Mar. 2025
While the Whitney Houston bob was just a bad match for her face, almost all of her wigs have had something wrong with them this year, the biggest cardinal sin being that they were being lazily placed behind her hairline with minimal attempt to blend.
—Shamira Ibrahim, Vulture, 3 Feb. 2025
Enriched with ingredients that promote hair growth, like castor oil, the hairline looks and feels stronger with every use.
—Jailynn Taylor, Allure, 2 Apr. 2025
See All Example Sentences for hairline
Cite this Entry
“Hairline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hairline. Accessed 22 Apr. 2025.
Copy CitationKids Definition
hairline
noun
hair·line
ˈha(ə)r-ˌlīn 
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
: the outline of scalp hair especially on the forehead
hairline
adjective
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