from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Light rainfall from a cloudless sky after sunset.
from the GNU version of the Collaborative International Dictionary of English
- n. A mist, or very fine rain, which sometimes falls from a clear sky a few moments after sunset.
from The Century Dictionary and Cyclopedia
- n. A mist or exceedingly fine rain which falls from a cloudless sky, a phenomenon not unusual in tropical climates.
From French serein (Wiktionary)