ALVEOLUS, in anatomy, the sockets in the jaws wherein the teeth are fixed†.—Some writers speak of teeth growing without alveoli. Pliny mentions a person who had a tooth in his palate. Eustachius relates, that he saw a man who at 60 had a tooth growing out of the middle of his fauces. Holler gives an instance of a person, whose teeth were of a piece with his jaws, without any insertion into alveoli.