Meaning
A rainbow formed by moonlight diffracted by water droplets in the air, usually fainter than a daytime rainbow and with fewer distinguishable colours.
Etymology
Origin: Unknown
From moon + bow, by analogy with rainbow.
Synonyms & Antonyms
Synonyms
lunar rainbowwhite rainbow
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2021, 2024.