El Gordo is the biggest lottery in the world. The name El Gordo means "The Fat One." The Spanish Christmas Lottery is called "el Sorteo Extraordinario de Navidad" or just "Lotería de Navidad" in Spanish. It is the biggest lottery in the world in terms of overall prize money payouts, hence the name "El Gordo" lottery, which translates as the Fat One or Fatty. El Gordo is actually the nickname of the first prize winning ticket number.