hairˈline noun

1. A line made of hair
2. A very fine line in writing, type, etc
3. A finely striped cloth
4. The edge of the hair on the forehead

adjective

1. (of eg a crack) very thin
2. Also figurative

hairˈnet noun

A net for keeping (usu a woman's) hair in place

hair oil noun

A scented oil for dressing the hair

hairˈ-pencil noun

A fine paint-brush

hairˈpiece noun

A length of false hair, or a wig covering only part of the head

hairˈpin noun

A U-shaped pin for fastening up the hair

adjective

Narrowly U-shaped, as a sharp bend on a road

hairˈ-powder noun

Powdered starch formerly dusted on the hair or wig

hairˈ-raiser noun

A tale of terror

hairˈ-raising adjective

Very exciting, terrifying

hair restorer noun

A preparation claimed to make hair grow on bald places

hair'sˈ-breadth or hairˈbreadth noun

1. The breadth of a hair
2. A minute distance

adjective

(of an escape, etc) extremely narrow

hair seal noun

A sea-lion, or eared seal with coarse hair only

hair shirt noun

1. A penitent's garment of haircloth
2. An intimate or secret affliction (figurative)

hair slide noun

A hinged clasp, often decorative, worn in the hair, esp by young girls

hair space noun (printing)

The thinnest metal space used by compositors, or its equivalent in photocomposition

hairˈ-splitter noun

A maker of over-fine distinctions

hairˈ-splitting noun and adjective

hairˈspray noun

Lacquer sprayed on the hair to hold it in place

hairˈspring noun

A slender spring regulating a watch balance

hairˈstreak noun

Any butterfly of several genera with a fine white band under the wing

hair stroke noun

A hairline in penmanship

hairˈstyle noun

A particular way of cutting and arranging the hair

hairˈstylist noun

hairˈ-tail noun

A fish of the family Trichiuridae, with a whiplike tail

hair trigger noun

A trigger, responding to very light pressure, that releases the hair of a gun

hairˈ-trigger adjective

1. Having a hair trigger
2. Responding to the slightest stimulus

hairˈ-wave noun

A wavelike appearance artificially given to hair

hairˈ-waver noun

hairˈ-waving noun

hairˈ-work noun

Work done or something made with (esp human) hair

hairˈworm noun

A worm, like a horsehair, which when young lives in the bodies of insects

hairy Mary noun (angling)

A kind of artificial fly

against the hair (archaic)

1. Against the grain
2. Contrary to inclination

a hair of the dog (that bit him or her, etc)

1. A smaller dose of that which caused the trouble
2. A morning drink of the alcohol that caused the hangover as a cure for it, taken as a homeopathic dose

by the short hairs or (informal) by the short and curlies

In a powerless position, at someone's mercy

get in someone's hair (informal)

To become a source of irritation to someone

keep one's hair on (informal)

To keep calm

let one's hair down

To forget reserve and speak or behave freely

lose one's hair

To grow angry

make someone's hair curl

To shock someone extremely

make someone's hair stand on end

To frighten or astonish someone greatly

not turn a hair

1. (of a horse) to show no sweat
2. Not to be ruffled or disturbed

put up one's hair

To dress the hair up on the head instead of wearing it hanging, once the mark of passage from girlhood to womanhood

split hairs

To make superfine distinctions

tear one's hair (out)

To display frenzied grief or (informal) great irritation

to a hair or to the turn of a hair

Exactly, with perfect nicety