Defn: A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth.
5. An outgrowth of the epidermis, consisting of one or of several cells, whether pointed, hooked, knobbed, or stellated. Internal hairs occur in the flower stalk of the yellow frog lily (Nuphar).
6. A spring device used in a hair-trigger firearm.
7. A haircloth. [Obc.] Chaucer.
8. Any very small distance, or degree; a hairbreadth.
Note: Hairs is often used adjectively or in combination; as,
hairbrush or hair brush, hair dye, hair oil, hairpin, hair powder, a
brush, a dye, etc., for the hair. Against the hair, in a rough and
disagreeable manner; against the grain. [Obs.] "You go against the
hair of your professions." Shak.
— Hair bracket (Ship Carp.), a molding which comes in at the back
of, or runs aft from, the figurehead.
— Hair cells (Anat.), cells with hairlike processes in the sensory
epithelium of certain parts of the internal ear.
— Hair compass, Hair divider, a compass or divider capable of
delicate adjustment by means of a screw.
— Hair glove, a glove of horsehair for rubbing the skin.
— Hair lace, a netted fillet for tying up the hair of the head.
Swift.
— Hair line, a line made of hair; a very slender line.
— Hair moth (Zoöl.), any moth which destroys goods made of hair,
esp. Tinea biselliella.
— Hair pencil, a brush or fine hair, for painting; — generally
called by the name of the hair used; as, a camel's hair pencil, a
sable's hair pencil, etc.
— Hair plate, an iron plate forming the back of the hearth of a
bloomery fire.
— Hair powder, a white perfumed powder, as of flour or starch,
formerly much used for sprinkling on the hair of the head, or on
wigs.
— Hair seal (Zoöl.), any one of several species of eared seals
which do not produce fur; a sea lion.
— Hair seating, haircloth for seats of chairs, etc.
— Hair shirt, a shirt, or a band for the loins, made of horsehair,
and worn as a penance.
— Hair sieve, a strainer with a haircloth bottom.
— Hair snake. See Gordius.
— Hair space (Printing), the thinnest metal space used in lines of
type.
— Hair stroke, a delicate stroke in writing.
— Hair trigger, a trigger so constructed as to discharge a firearm
by a very slight pressure, as by the touch of a hair. Farrow.
— Not worth a hair, of no value.
— To a hair, with the nicest distinction.
— To split hairs, to make distinctions of useless nicety.
HAIRBELL
Hair"bell`, n. (Bot.)
Defn: See Harebell.
HAIRBIRD
Hair"bird`, n. (Zoöl.)
Defn: The chipping sparrow.