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
see also:
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
The hair loss from GLP-1s is one of the most significant side effects that the beauty industry is watching, according to Audrey Depraeter-Montacel, Accenture's global beauty industry lead.
—
Laya Neelakandan, CNBC, 2 May 2026
My guide in East Palestine was Kenny, a friend of JK’s and the proprietor of Styles by Kenneth, a hair salon.
—Mary Norris, New Yorker, 1 May 2026
Investigators said the argument escalated into a physical fight when the female suspect began swinging and striking the victim in the chest and head and then pulling her hair.
—Alexa Ashwell, Baltimore Sun, 1 May 2026
Perrin’s contributions go beyond his bus-driving heroics A slender young man with a mop of curly brown hair, Perrin is a math whiz who graduated high school in Arcata at 16 and has been working at Kneeland Elementary ever since.
—Los Angeles Times, 1 May 2026
See All Example Sentences for hair
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Laya Neelakandan, CNBC, 2 May 2026
My guide in East Palestine was Kenny, a friend of JK’s and the proprietor of Styles by Kenneth, a hair salon.
—Mary Norris, New Yorker, 1 May 2026
Investigators said the argument escalated into a physical fight when the female suspect began swinging and striking the victim in the chest and head and then pulling her hair.
—Alexa Ashwell, Baltimore Sun, 1 May 2026
Perrin’s contributions go beyond his bus-driving heroics A slender young man with a mop of curly brown hair, Perrin is a math whiz who graduated high school in Arcata at 16 and has been working at Kneeland Elementary ever since.
—Los Angeles Times, 1 May 2026
See All Example Sentences for hair
Cite this Entry
“Hair.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hair. Accessed 2 May. 2026.
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
haired
adjective
ˈha(ə)rd,
ˈhe(ə)rd
hairless
adjective
ˈha(ə)r-ləs,
ˈhe(ə)r-
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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