Prolactin is a hormone produced in the pituitary gland, named because of its role in lactation. It also has other wide ranging functions in the body, from acting on the reproductive system to influencing behaviour and regulating the immune system.
to carry or have on the body or about the person as a covering, equipment, ornament, or the like: to wear a coat; to wear a saber; to wear a disguise. to have or use on the person habitually: to wear a wig. to bear or have in one's aspect or appearance: to wear a smile; to wear an air of triumph.
Wear is defined as to have on the body or to reduce the quality of the appearance by constant use. 1  An example of wear is to have on a pair of sunglasses. 2  An example of wear is to wear a hole in the elbow of a jacket.