Definition of "Saturnalia"

Saturn was an ancient Italian deity. It was attempted to identify him with the Grecian god Cronos, and fabled that after his dethronement by Jupiter he fled to Italy, where he reigned during what was called the Golden Age. In memory of his beneficent dominion, the feast of Saturnalia was held every year in the winter season.

1913, Thomas Bulfinch, chapter 1, in The Age of Fable