hair·​line | \ ˈher-ˈlīn How to pronounce hairline (audio) \

Definition of hairline

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
3a : a textile design consisting of lengthwise or crosswise lines usually one thread wide
b : a fabric with such a design
4a : the outline of scalp hair especially on the forehead
b : the way the hair frames the face

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Other Words from hairline

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 Since Bellinger sustained the hairline fracture in his leg, right-handed hitting Smith and left-handed hitting Muncy have shared the cleanup spot. Steve Henson Assistant Sports Editor, Los Angeles Times, "Fernando Tatis Jr. homers twice again, but Dodgers rally and Kenley Jansen hangs on," 24 Apr. 2021 Cody Bellinger, who has a hairline fracture of his left fibula and there is no timetable for his return. Houston Mitchell Assistant Sports Editor, Los Angeles Times, "Dodgers Dugout: Offense has hit an untimely slump," 22 Apr. 2021 Arizona right-hander Zac Gallen returns to the mound against Oakland after missing the first 12 days of the season with a hairline fracture in his right forearm. Creg Stephenson |, al, "Reds-Giants MLB 2021 live stream (4/13): How to watch online, TV info, time," 14 Apr. 2021 In November, Biden suffered a hairline fracture in his right foot playing with his dog Major. Rob Crilly, Washington Examiner, "Now, White House blames 'tricky' steps for Biden's Air Force One fall," 22 Mar. 2021 Grégoire loves to talk about the posters, gesturing widely to emphasize the storytelling, his eyebrows jumping almost high enough to touch his hairline. Washington Post, "In a gray, empty Paris, this corner shop’s colorful posters transport you wherever you want to go," 19 Feb. 2021 DiMeo received the donor's entire face, from his hairline at the top of his forehead to the bottom of his neck and ear to ear. Karen Weintraub, USA TODAY, "From fiery crash to medical miracle: New Jersey man is world's first to receive successful face and double-hand transplant," 3 Feb. 2021 This isn't the first time Prince William's hairline has made headlines. Kayleigh Roberts, Marie Claire, "Prince William Is the World's Sexiest Bald Man, According to a New Study," 28 Mar. 2021 Not quite as important as the product on the court, but Smart's hairline will be an important story line to monitor. Ben Steele, Milwaukee Journal Sentinel, "Seven things to know about new Marquette basketball coach Shaka Smart," 27 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hairline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hairline

1846, in the meaning defined at sense 1

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Time Traveler for hairline

Time Traveler

The first known use of hairline was in 1846

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Statistics for hairline

Last Updated

8 May 2021

Cite this Entry

“Hairline.” Dictionary, Merriam-Webster, Accessed 17 May. 2021.

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More Definitions for hairline



English Language Learners Definition of hairline

: a thin line or crack
: the line where your hair starts on your forehead


hair·​line | \ -ˈlīn How to pronounce hairline (audio) \

Medical Definition of hairline

: the outline of scalp hair especially on the forehead

Other Words from hairline

hairline adjective

More from Merriam-Webster on hairline

Thesaurus: All synonyms and antonyms for hairline

Nglish: Translation of hairline for Spanish Speakers

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