Homonym: Nipple (Teat)
A nipple is a small, protruding structure found on the surface of the breast in mammals, including humans. It serves as the outlet for milk during breastfeeding, allowing infants to receive nourishment. Nipples are surrounded by the areola, a darker area of skin that can vary in size and color among individuals.
In addition to their role in lactation, nipples have sensory functions and can respond to touch and temperature. They are present in both males and females, although they are more prominent in females due to their association with lactation and breast development.