Illustration of hair
- 1 shaft
- 2 sebaceous gland
- 3 epidermis
- 4 dermis
- 5 hair follicle
- 6 bulb
- 7 papilla
often attributive
1
2
3
a
: a minute distance or amount
won by a hair
b
: a precise degree
aligned to a hair
5
: a filamentous structure that resembles hair
leaf hair
Examples of hair in a Sentence
He plucked a hair from his arm.
There are dog hairs all over my coat.
The hair on her arms is blond.
He has a lot of hair on his chest.
He got his hair cut last week.
He has a thick head of hair.
a balding man who is losing his hair
He won the race by a hair.
He was a hair off on the count.
Recent Examples on the Web
Perry, who earlier this year split from her longtime partner and father of her daughter, the actor Orlando Bloom, was wearing a dark one-piece bathing suit, with her hair swept casually into a bun.
—
Naomi Fry, New Yorker, 18 Oct. 2025
After the tour, guests will be ushered to the backstage dressing room, where their hair and makeup will be done by members of Sabrina’s own glam team.
—Mae Hamilton, Travel + Leisure, 18 Oct. 2025
At the beginning of episode two, viewers see Kate methodically remove the multiple bobby pins holding together her vice presidential hair and sweep them away, signaling an end — at least for now — to Kate’s ambitions to be vp.
—Hilary Lewis, HollywoodReporter, 18 Oct. 2025
Both kept their hair long and loose, and makeup minimal.
—Anna Cafolla, Vogue, 18 Oct. 2025
See All Example Sentences for hair
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Naomi Fry, New Yorker, 18 Oct. 2025
After the tour, guests will be ushered to the backstage dressing room, where their hair and makeup will be done by members of Sabrina’s own glam team.
—Mae Hamilton, Travel + Leisure, 18 Oct. 2025
At the beginning of episode two, viewers see Kate methodically remove the multiple bobby pins holding together her vice presidential hair and sweep them away, signaling an end — at least for now — to Kate’s ambitions to be vp.
—Hilary Lewis, HollywoodReporter, 18 Oct. 2025
Both kept their hair long and loose, and makeup minimal.
—Anna Cafolla, Vogue, 18 Oct. 2025
See All Example Sentences for hair
Cite this Entry
“Hair.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hair. Accessed 19 Oct. 2025.
Copy CitationKids Definition
hair
noun
ˈha(ə)r 
ˈhe(ə)r
1
a
: a slender threadlike growth from the skin of an animal
especially
: one that usually contains coloring and forms part of the characteristic coat of a mammal
b
: a covering or growth of hairs of an animal or a body part
2
: a tiny distance or amount
won by a hair
3
: a threadlike structure that resembles hair
leaf hairs
Medical Definition
hair
nounoften attributive
1
: a slender threadlike outgrowth of the epidermis of an animal
especially
: one of the usually pigmented filaments that form the characteristic coat of a mammal
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