"colored circle around a nipple," 1706, from Latin areola, literally "small area," diminutive of area (see area). Introduced in this sense 1605 by Swiss anatomist and botanist Caspar Bauhin (1560-1624).
areola a·re·o·la (ə-rē'ə-lə)
n. pl. a·re·o·las or a·re·o·lae (-lē')
A small area.
Any of numerous spaces or interstices in areolar tissue.
A pigmented, depigmented, or erythematous zone surrounding a papule, pustule, wheal, or cutaneous neoplasm.