Hair cells
Hair Hair (h[^a]r), n. [OE. her, heer, h[ae]r, AS. h[=ae]r; akin to OFries. h[=e]r, D. & G. haar, OHG. & Icel. h[=a]r, Dan. haar, Sw. h[*a]r; cf. Lith. kasa.] 1. The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the head or for any part or the whole of the body. [1913 Webster]

2. One the above-mentioned filaments, consisting, in vertebrate animals, of a long, tubular part which is free and flexible, and a bulbous root imbedded in the skin. [1913 Webster]

Then read he me how Sampson lost his hairs. --Chaucer. [1913 Webster]

And draweth new delights with hoary hairs. --Spenser. [1913 Webster]

3. Hair (human or animal) used for various purposes; as, hair for stuffing cushions. [1913 Webster]

4. (Zo["o]l.) 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. [1913 Webster]

5. (Bot.) 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}). [1913 Webster]

6. A spring device used in a hair-trigger firearm. [1913 Webster]

7. A haircloth. [Obs.] --Chaucer. [1913 Webster]

8. Any very small distance, or degree; a hairbreadth. [1913 Webster]

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. [1913 Webster]

{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} (Zo["o]l.), any moth which destroys goods made of hair, esp. {Tinea biselliella}.

{Hair pencil}, a brush or pencil made of 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} (Zo["o]l.), 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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • hair cells — neuroepithelial cells with hairlike processes (kinocilia or stereocilia or both), found in the internal ear. Those in the organ of Corti are called auditory hair cells, are connected to fibers of the cochlear nerve, and control the sense of… …   Medical dictionary

  • hair cells — (1) Cells found in the epithelial lining of the labyrinth of the inner ear. The hairs are stereovilli up to 25 m m long that restrict the plane in which deformation of the apical membrane of the cell can be brought about by movement of fluid or… …   Dictionary of molecular biology

  • vestibular hair cells — hair cells found in the maculae of the utricle and saccule, serving as sensory receptors responsive to changes in position; they regulate the sense of equilibrium by sending impulses up the vestibular nerve to the brain. There are two types of… …   Medical dictionary

  • inner hair cells — a flask shaped type of auditory hair cells, found in a single row on the medial side of the inner tunnel of the organ of Corti; they receive impulses from the outer hair cells and transform them into electrical signals that are given to the… …   Medical dictionary

  • outer hair cells — a type of cylindrical auditory hair cell found in three rows on the lateral side of the Corti tunnel, supported by outer phalangeal cells; they receive sound waves and transmit them to the inner hair cells for transformation into electrical… …   Medical dictionary

  • acoustic hair cells — auditory hair c s …   Medical dictionary

  • cochlear hair cells — auditory hair c s …   Medical dictionary

  • Hair — (h[^a]r), n. [OE. her, heer, h[ae]r, AS. h[=ae]r; akin to OFries. h[=e]r, D. & G. haar, OHG. & Icel. h[=a]r, Dan. haar, Sw. h[*a]r; cf. Lith. kasa.] 1. The collection or mass of filaments growing from the skin of an animal, and forming a covering …   The Collaborative International Dictionary of English

  • Hair bracket — Hair Hair (h[^a]r), n. [OE. her, heer, h[ae]r, AS. h[=ae]r; akin to OFries. h[=e]r, D. & G. haar, OHG. & Icel. h[=a]r, Dan. haar, Sw. h[*a]r; cf. Lith. kasa.] 1. The collection or mass of filaments growing from the skin of an animal, and forming… …   The Collaborative International Dictionary of English

  • Hair compass — Hair Hair (h[^a]r), n. [OE. her, heer, h[ae]r, AS. h[=ae]r; akin to OFries. h[=e]r, D. & G. haar, OHG. & Icel. h[=a]r, Dan. haar, Sw. h[*a]r; cf. Lith. kasa.] 1. The collection or mass of filaments growing from the skin of an animal, and forming… …   The Collaborative International Dictionary of English

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