noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A rainbow formed by moonlight diffracted by water droplets in the air, usually fainter than a daytime rainbow and with fewer distinguishable colours.

   "Often rainbows by night or moonbows span the lake."

Synonyms

All synonyms

lunarlunar rainbowwhite rainbow

Example

More examples

"Often rainbows by night or moonbows span the lake."

Etymology

From moon + bow, by analogy with rainbow.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.