‖n.; pl. Naevi [ L. ] (Med.) A spot or mark on the skin of children when born; a birthmark; -- the term includes moles as wells a other types of birthmark, and is most commonly applied to reddish or brownish raised vascular areas of the skin, i. e., those consisting mainly of blood vessels, as dilated arteries, veins, or capillaries. [ Usually spelled nevus. ] [ 1913 Webster +PJC ]