WordNet
n. a small tubular cavity containing the root of a hair; small muscles and sebaceous glands are associated with hair follicles
Wikipedia
A hair follicle is a mammalian skin organ that produces hair. Hair production occurs in phases, including growth (anagen), cessation (catagen), and rest (telogen) phases. Stem cells are responsible for hair production. The shape of the hair follicle has an effect on the hair shape and texture of the individual's hair.
Usage examples of "hair follicle".
One of these, the hair follicle mite, swims around in the oil sea that surrounds facial hairs.
He didn't think, either, that one leg found against the Drake statue in England belonged to the rest of the body that had been recovered in England: he'd taken flesh and hair follicle samples for a DNA match which would take at least another week to confirm: the DNA requests he'd made were the outstanding tests still to be completed by the forensic laboratory.