areola

noun pl. areolae -·lae′ (-lē′) or areolas -·las

1. a small space, as between the veins of a leaf or the ribs of an insect's wing
2. Anat. a small area around something, as the dark ring around a nipple
3. Biol. a small hollow in a surface

Etymology: ModL < L, dim. of area: see area