NÆVUS, a mole on the skin, generally called a mother's mark; also the tumour known by the name of a wen.
All preternatural tumours on the skin, in the form of a wart or tubercle, are called cacrescences; by the Greeks they are called acrothymia; and when they are
born with a person, they are called nævi materni, or marks from the mother. See TUMOURS, SURGERY Index.