follicle
Pronunciation: /ˈfɒlɪk(ə)l/
noun
- 1 Anatomy a small secretory cavity, sac, or gland, in particular:
- (also hair follicle) the sheath of cells and connective tissue which surrounds the root of a hair.
- short for Graafian follicle.


Origin:
late Middle English: from Latin folliculus 'little bag', diminutive of follis 'bellows'