hair

noun

1. 毛发；（尤指）头发
   the substance that looks like a mass of fine threads growing especially on the head; one of these threads growing on the body of people and some animals
   1. fair/dark hair
      浅色头发；黑发
   2. straight/curly/wavy hair
      直 / 鬈 / 波浪发
   3. to comb/brush your hair
      梳头
   4. I'll be down in a minute. I'm doing (= brushing, arranging, etc.) my hair .
      我马上就下来。我在梳头呢。
   5. I'm having my hair cut this afternoon.
      我今天下午要去理发。
   6. body/facial/pubic hair
      体 / 脸 / 阴毛
   7. There's a hair in my soup.
      我的汤里有根毛。
   8. The rug was covered with cat hairs.
      地毯上净是猫毛。
2. 有…毛发（或头发）的
   having the type of hair mentioned
   1. dark-haired
      黑发的
   2. long-haired
      长发的
3. （植物叶茎上的）茸毛
   a thing that looks like a fine thread growing on the leaves and stems of some plants

1. N-VAR 头发
   Your hair is the fine threads that grow in a mass on your head.
   1. I wash my hair every night...
      我每晚都洗头。
   2. He has black hair.
      他一头乌发。
   3. ...a girl with long blonde hair...
      金发飘飘的女孩
   4. I get some grey hairs but I pull them out.
      我有几根白发，但我都拔掉了。
2. N-VAR 毛发;汗毛;体毛
   Hair is the short, fine threads that grow on different parts of your body.
   1. The majority of men have hair on their chest...
      大多数男子长有胸毛。
   2. It tickled the hairs on the back of my neck.
      它挠得我后脖梗儿的绒毛直痒痒。
3. N-VAR （动物的）毛;（马的）鬃，鬣
   Hair is the threads that cover the body of an animal such as a dog, or make up a horse's mane and tail.
   1. I am allergic to cat hair.
      我对猫毛过敏。
   2. ...dog hairs on the carpet.
      地毯上的狗毛
4. N-COUNT （昆虫、植物上的）茸毛
   Hairs are short, very fine threads that grow on some insects and plants.
   1. The stinging nettle has a square stem and little hairs.
      荨麻长有四方茎和细小茸毛。

Hair can be both a count and an uncount noun. When you are describing people, you usually use the uncount sense. She has long blonde hair and blue eyes. ...the girl with red hair and freckles. However, when you particularly want to refer to one or several of the individual strands that grow from your head or body, you can use the count sense. There were some blonde hairs in the car... a single fibre thinner than a hair.
hair 既可作可数名词，又可作不可数名词。用来描述人时，通常取不可数名词的意思，如：She has long blonde hair and blue eyes（她有着长长的金发和蓝色的眼睛），the girl with red hair and freckles（一头红发面带雀斑的女孩）。但如果要特指头上或身上的某一缕或几缕毛发，就取可数名词的意思，如：There were some blonde hairs in the car（车里有几根金发），a single fibre thinner than a hair（一根比头发丝还要细的纤维）。

5. PHRASE 彻底放松;玩个痛快;无拘无束
   If you let your hair down, you relax completely and enjoy yourself.
   1. ...the world-famous Oktoberfest, a time when everyone in Munich really lets their hair down.
      全球闻名的啤酒节，一个让所有身在慕尼黑的人都尽情放松的节日
6. PHRASE 使…毛骨悚然
   Something that makes your hair stand on end shocks or frightens you very much.
   1. This was the kind of smile that made your hair stand on end.
      这是那种让人不寒而栗的微笑。
7. PHRASE 非常整洁;衣冠楚楚
   If you say that someone has not a hair out of place, you are emphasizing that they are extremely smart and neatly dressed.
   1. She had a lot of make-up on and not a hair out of place.
      她化了浓妆，精致得让人挑不出一丝瑕疵。
8. PHRASE 面不改色;毫不惊慌;泰然自若
   If you say that someone faced with a shock or a problem does not turn a hair, you mean that they do not show any surprise or fear, and remain completely calm.
   1. No one seems to turn a hair at the thought of the divorced Princess marrying.
      似乎没有人对离异的公主再婚感到丝毫地吃惊。
9. PHRASE 在细节上过分纠缠
   If you say that someone is splitting hairs, you mean that they are making unnecessary distinctions between things when the differences between them are so small they are not important.
   1. Don't split hairs. You know what I'm getting at.
      别钻牛角尖了。你知道我指什么。

1. Her hair was tied back
   她的头发扎了起来。
2. The wind blew her hair back from her forehead
   风把她前额上的头发吹到了后面。
3. She brushed the powder out of her hair
   她把头发上的粉末刷掉了。
4. I felt her dark brown hair brushing the back of my shoulder
   我感觉到她深褐色的头发拂过我的肩。
5. The hat concealed her hair.
   帽子遮住了她的头发。
6. She had dyed black hair.
   她将她的黑头发染了色。
7. Then the hair began to grow again and I felt terrific.
   然后，头发又长起来了，我感觉棒极了。
8. I wash my hair every night
   我每晚都洗头。
9. He has black hair.
   他一头乌发。
10. I get some grey hairs but I pull them out.
    我有几根白发，但我都拔掉了。
11. The majority of men have hair on their chest
    大多数男子长有胸毛。
12. It tickled the hairs on the back of my neck.
    它挠得我后脖梗儿的绒毛直痒痒。
13. The stinging nettle has a square stem and little hairs.
    荨麻长有四方茎和细小茸毛。
14. This was the kind of smile that made your hair stand on end.
    这是那种让人不寒而栗的微笑。
15. She had a lot of make-up on and not a hair out of place.
    她化了浓妆，精致得让人挑不出一丝瑕疵。
16. No one seems to turn a hair at the thought of the divorced Princess marrying.
    似乎没有人对离异的公主再婚感到丝毫地吃惊。
17. Don't split hairs. You know what I'm getting at.
    别钻牛角尖了。你知道我指什么。
18. Your hair is all right; it's just that you need a haircut.
    你的头发还好；不过你该理发了。
19. He caught sight of his hair in a mirror.
    他从镜子里看见了自己的头发。
20. She had her hair permed.
    她烫了发。
21. She had curly black hair and rouged cheeks.
    她的头发乌黑卷曲，脸上涂了腮红。
22. He laughed and ran his fingers through his hair
    他笑了，用手指拢了拢他的头发。
23. I ran the brush through my hair and dashed out
    我用刷子刷了一下头发，冲了出去。
24. Her hair was singed and her anorak was burnt
    她头发烧焦了，带风帽的夹克也烧掉了。
25. His hair was dyed a startling black.
    他把头发染成了令人吃惊的黑色。
26. His thick blond hair had just been styled before his trip.
    他在旅行前刚把浓密的金发修剪了一番。
27. She inherited our father's thick, wavy hair
    她继承了我们父亲那头浓密的卷发。
28. Her hair wants cutting.
    她该剪头发了。
29. It's only a hair off a bull's back to them.
    这对他们来说，不过九牛一毛。
30. She was wearing a red flower in her hair.
    她头上戴了一朵红花。

n.

get in sb's hair

• 烦扰某人；缠着（提问等）
  to annoy sb by always being near them, asking them questions, etc.

the hair of the dog (that bit you)

• 用于解宿醉的酒
  alcohol that you drink in order to make you feel better when you have drunk too much alcohol the night before

keep your hair on

• 冷静下来，别发脾气
  used to tell sb to stop shouting and become calm when they are angry

let your hair down

• 放松；轻松一下
  to relax and enjoy yourself, especially in a lively way

make sb's hair stand on end

• 惊吓某人；使某人毛骨悚然
  to shock or frighten sb
  1. a chilling tale that will make your hair stand on end
     令人毛骨悚然的故事

not harm/touch a hair of sb's head

• 不动某人一根头发；丝毫不伤害某人
  to not hurt sb physically in any way

not have a hair out of place

• 显得非常整洁
  to look extremely clean and neat

not turn a hair

• 面不改色；镇定自若
  to show no emotion when sth surprising, shocking, etc. happens

hang by a hair/thread

• 命悬一线；气若游丝；危在旦夕
  to be in great danger

not see hide nor hair of sb/sth

• （一段时间）不见某人（或某物）的踪影
  not to see sb/sth for some time
  1. I haven't seen hide nor hair of her for a month.
     我有一个月没见过她了。

split hairs

• 在细节上过分纠缠
  to pay too much attention in an argument to differences that are very small and not important

tear your hair (out)

• （因发怒、焦急而）撕扯自己的头发
  to show that you are very angry or anxious about sth
  1. She's keeping very calm─anyone else would be tearing their hair out.
     她依旧泰然自若，要是换个人早急坏了。

noun

1. a filamentous projection or process on an organism

2. cloth woven from horsehair or camelhair

   Synonym:    haircloth

3. any of the cylindrical filaments characteristically growing from the epidermis of a mammal
   1. there is a hair in my soup

   Synonym:    pilus

4. a covering for the body (or parts of it) consisting of a dense growth of threadlike structures (as on the human head)
   1. he combed his hair
   2. each hair consists of layers of dead keratinized cells

5. filamentous hairlike growth on a plant
   1. peach fuzz

   Synonym:    fuzztomentum

6. a very small distance or space
   1. they escaped by a hair's-breadth
   2. they lost the election by a whisker

   Synonym:    hair's-breadthhairsbreadthwhisker