Fascinus

In ancient Roman religion and magic, the fascinus or fascinum was the embodiment of the divine phallus. The word can refer to the deity himself (Fascinus), to phallus effigies and amulets, and to the spells used to invoke his divine protection. Pliny calls it a medicus invidiae, a "doctor" or remedy for envy (invidia, a "looking upon") or the evil eye.