Definition of serein
1 archaic : the supposed fall of dew from a clear sky just after sunset
2 : mist or fine rain falling from an apparently clear sky
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 serein
French, from Middle French serain evening, nightfall, from Latin sero late
Seen and Heard
What made you want to look up serein? Please tell us where you read or heard it (including the quote, if possible).