FOLLICLE
follicle
(noun) any small spherical group of cells containing a cavity
Source: WordNet® 3.1
Etymology
Noun
follicle (plural follicles)
(anatomy) A small cavity or sac, such as a hair follicle.
(botany) A type of primitive dry fruit produced by certain flowering plants.
Source: Wiktionary
Fol"li*cle, n. Etym: [L. folliculus a small bag, husk, pod, dim of
follis bellows, an inflated ball, a leathern money bag, perh. akin to
E. bellows: cf. F. follicule. Cf. 2d Fool.]
1. (Bot.)
Definition: A simple podlike pericarp which contains several seeds and
opens along the inner or ventral suture, as in the peony, larkspur
and milkweed.
2. (Anat.)
(a) A small cavity, tubular depression, or sac; as, a hair follicle.
(b) A simple gland or glandular cavity; a crypt.
(c) A small mass of adenoid tissue; as, a lymphatic follicle.
Source: Webster’s Unabridged Dictionary 1913 Edition