Trinacria
The word Trinacria means triquetra and refers to the shape of the island of Sicily (“Sicilia” in Italian), the largest island in the Mediterranean. Sicily was known by the Romans as Trinacrium, meaning “star with three points”. The Trinacria symbol is the head of Medusa who, in Greek mythology, was a monster (a Gorgon generally described as a winged human female with living venomous snakes in place of hair; gazers upon her face would turn to stone) surrounded by three bent running legs, and three stalks of wheat. Due to the island's distinct triangular shape, the symbol has also been adopted by the Sicilian government and is located on the center of Sicily's flag. (Source: Wikipedia)