From the hair-follicle also grows out a pair of sebaceous glands, which serve to keep the fully-formed hair moist.
This depression takes the form of a sac and is called the hair-follicle, in which the roots of the hair are embedded.
A boil is an inflammatory formation having its starting point in a sebaceous-gland, sweat-gland, or hair-follicle.
hair follicle n.
A deep narrow pit that is formed by the tubular invagination of the epidermis and corium and encloses the root of the hair.