1. (noun) small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite

• ring of color

1. (noun) small space in a tissue or body part such as the area between veins on a leaf or an insect's wing

• interstice

2. (noun) small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite

• area
• region

1. (noun) small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite

• areolar
• areolate