WORD MEANING
Blue moon meaning
BLOO MOON · noun
A rare event when a second full moon occurs within a single calendar month.
See all 16 words from the August 21, 2026 puzzle →Other meanings
An idiom meaning something that happens very rarely.
A type of beer brewed by Blue Moon Brewing Company.
The term can refer to an astronomical event, an idiomatic expression, or a brand name.
Examples
We only see a blue moon once in a while, making it a rare event.
They say something happens once in a blue moon when it is very uncommon.