- The definition of a fiesta is a celebration or a holiday.
An example of a fiesta is Ano Nuevo, or New Year’s Day.
- a religious festival; esp., a saint's day
- any gala celebration; holiday
Origin: Spanish ; from Vulgar Latin festa: see feast
Used by arrangement with John Wiley & Sons, Inc.
Origin: Spanish, from Vulgar Latin *fēsta; see feast.