Areola: 1. The small darkened area around the nipple of the breast. 2. The colored part of the iris around the pupil of the eye. 3. Any small space in a tissue. From Women's Health Resources What's Living in Your Dirty Sheets?Calculate Your BMI HereFast Relief From Migraines: CGRP Inhibitors Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew