noun, plural fi·es·tas [fee-es-tuh z; Spanish fyes-tahs] /fiˈɛs təz; Spanish ˈfyɛs tɑs/.
- any festival or festive celebration.
- (in Spain and Latin America) a festive celebration of a religious holiday.
- a religious festival or celebration, esp on a saint’s day
- a holiday or carnival
1844, Spanish, literally “feast” (see feast (n.)).