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hair

noun, often attributive \ˈher\

: a thin threadlike growth from the skin of a person or animal

: a covering or growth of hairs

: the covering of hairs on a person's head

Full Definition of HAIR

a : 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

b : the hairy covering of an animal or a body part; especially : the coating of hairs on a human head

: haircloth

a : a minute distance or amount <won by a hair>

b : a precise degree <aligned to a hair>

obsolete : nature, character

: a filamentous structure that resembles hair <leaf hair>

— hair·less adjective

— hair·less·ness noun

— hair·like \-ˌlīk\ adjective

— in one's hair

: persistently and annoyingly in one's presence <can't work with you in my hair all day>

— out of one's hair

: out of one's way : not in one's hair <keep the children out of his hair for a while>

See hair defined for English-language learners

See hair defined for kids

Illustration of HAIR

Origin of HAIR

Middle English, from Old English hǣr; akin to Old High German hār hair

First Known Use: before 12th century

Related to HAIR

Synonyms: ace, hairbreadth (or hairsbreadth), hairline, hop, skip, and jump, inch, neck, shouting distance, step, stone's throw

Antonyms: country mile, long haul, mile

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral

Rhymes with HAIR

air, Ayr, bare, bear, Blair, blare, care, chair, chare, dare, Dare, e'er, ere, err, eyre, fair, fare, flair, flare, glair, glare, hare, Herr, heir, lair, mare, ne'er, pair, pare, pear, prayer, rare, rear, scare, share, snare, spare, square, stair, stare, swear, tare, tear, their, there, vair, ware, wear, weir, where, yare

HAIRS Defined for Kids

hair

noun \ˈher\

Definition of HAIR for Kids

: a threadlike growth from the skin of a person or animal <She pulled out a hair.>

: a covering or growth of hairs <I got my hair cut.>

: something (as a growth on a leaf) like an animal hair

: a very small distance or amount <I won by a hair.>

— haired \ˈherd\ adjective <a long-haired dog>

— hair·less \ˈher-ləs\ adjective

— hair·like \-ˌlīk\ adjective

Medical Dictionary

hair

noun , often attrib \ˈha(ə)r, ˈhe(ə)r\

Medical Definition of HAIR

: 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

: the hairy covering of an animal or a body part; especially : the coating of hairs on a human head

—hair·like \-ˌlīk\ adjective