Definition of feast day
: a day set as a commemorative festival; especially : a periodic religious festival
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of feast day
Middle English feste day, from feste festival + day
Seen and Heard
What made you want to look up feast day? Please tell us where you read or heard it (including the quote, if possible).