from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A tubular infolding of the epidermis containing the root of a hair.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a small tubular cavity containing the root of a hair; small muscles and sebaceous glands are associated with them


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  • Merriam-Webster Dictionary:


    Date: 1838

    : the tubular epithelial sheath that surrounds the lower part of the hair shaft and encloses at the bottom a vascular papilla supplying the growing basal part of the hair with nourishment

    February 4, 2008