Topic: HUMAN
| Language: | Old English |
| Origin: | hær |
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hair S1 W1

1 [uncountable]HBH the mass of things like fine threads that grows on your head COLLOCATIONS 
brush/comb your hair do your hair (=arrange it in a style) have/get your hair cut/done (=by a hairdresser) short/long hair shoulder-length hair fair/blonde hair (=hair that is yellowish-white in colour) dark hair red/auburn hair also ginger hair British English (=hair that is orangey-brown in colour) straight/curly hair frizzy hair (=hair that is tightly curled) wavy hair (=hair with loose curls) fine/thick hair lank hair (=hair that is thin, straight, and unattractive) dark-haired/fair-haired/long-haired etc strand of hair (=a thin piece of hair) lock of hair (=a fairly thick piece of hair) mop of hair (=a large amount of thick untidy hair) be losing your hair (=be going bald) run your fingers through your/somebody's hair ruffle/tousle somebody's hair (=make it untidy by rubbing your hand through it) ! When you mean 'all the hair on a person's head', hair is an uncountable noun: He has black hair (NOT He has black hairs).

brush/comb your hair do your hair (=arrange it in a style) have/get your hair cut/done (=by a hairdresser) short/long hair shoulder-length hair fair/blonde hair (=hair that is yellowish-white in colour) dark hair red/auburn hair also ginger hair British English (=hair that is orangey-brown in colour) straight/curly hair frizzy hair (=hair that is tightly curled) wavy hair (=hair with loose curls) fine/thick hair lank hair (=hair that is thin, straight, and unattractive) dark-haired/fair-haired/long-haired etc strand of hair (=a thin piece of hair) lock of hair (=a fairly thick piece of hair) mop of hair (=a large amount of thick untidy hair) be losing your hair (=be going bald) run your fingers through your/somebody's hair ruffle/tousle somebody's hair (=make it untidy by rubbing your hand through it)
2 [countable]HBHHBA one of the long fine things like thread that grows on people's heads and on other parts of their bodies, or similar things that grow on animals :
The cat has left white hairs all over the sofa.
I'm starting to get a few grey hairs.
The cat has left white hairs all over the sofa.
I'm starting to get a few grey hairs.3 to be very worried or angry about something, especially because you do not know what to do :
Anyone else would have been tearing their hair out trying to work it out.
be tearing/pulling your hair out
Anyone else would have been tearing their hair out trying to work it out.4 to enjoy yourself and start to relax, especially after working very hard :
The party gave us all a chance to really let our hair down.
let your hair down
informal
The party gave us all a chance to really let our hair down.5 a day when your hair does not look tidy or neat even when you try to arrange it carefully - used humorously :
bad hair day
6 used to tell someone to keep calm and not get annoyed :
All right, all right, keep your hair on! I'm sorry.
keep your hair on
British English spoken
All right, all right, keep your hair on! I'm sorry.9 if a story, experience etc makes your hair curl, it is very surprising, frightening, or shocking :
tales that would make your hair curl
make somebody's hair curl
tales that would make your hair curl13 alcohol that you drink to cure a headache caused by drinking too much alcohol the night before - used humorously
