The "mano cornuta" is an Italian hand gesture that translates to "horned hand." It is made by extending the pinky and index fingers while keeping the other fingers folded down. This gesture is often associated with various cultural meanings, including protection against the evil eye and a symbol of good luck. In popular culture, the mano cornuta is frequently used in music and entertainment, particularly by fans of heavy metal and rock music. It has been popularized by musicians like Ronnie James Dio, who used it as a symbol of solidarity among fans.