Definition of Blue moon

1. Noun. A long time. "Something that happens once in blue moon almost never happens"

Language type: Colloquialism
Generic synonyms: Age, Long Time, Years

Definition of Blue moon

1. Noun. (rare) The moon tinted towards blue as it appears in the sky, caused by dust or smoke in the atmosphere. ¹

2. Noun. (archaic) Something absurd. ¹

3. Noun. (obsolete) The third full moon in a quarter that contains four rather than the usual three full moons. ¹

4. Noun. (idiomatic) (context: by extension) A long time. ¹

5. Noun. A flavor of sweet ice cream that is popular in the Midwestern U.S. and is a component of Superman ice cream. ¹

6. Noun. The second of two full moons that occur in the same calendar month. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Blue Moon

blue jessamine
blue jets
blue joke
blue law
blue laws
blue line
blue lines
blue link
blue links
blue lotus
blue mahoe
blue marguerite
blue marlin
blue mockingbird
blue mold fungus
blue moon (current term)
blue moons
blue movies
blue murder
blue mussel
blue mussels
blue naevus
blue nevus
blue noise
blue note
blue notes
blue oedema
blue ointment
blue orchid

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