Calavera

A calavera [plural:calaveras] (Spanish -pronounced: [kalaˈβeɾa] for "skull") is a representation of a human skull. The term is most often applied to decorative or edible skulls made (usually by hand) from either sugar ( called Alfeñiques )or clay which are used in the Mexican celebration of the Day of the Dead (Día de los Muertos) and the Roman Catholic holiday All Souls' Day. Calavera can also refer to any artistic representations of skulls, such as the lithographs of José Guadalupe Posada. The most widely known calaveras are created with cane sugar and are decorated with items such as colored foil, icing, beads, and feathers.

https://en.wikipedia.org/wiki/Calavera