blue moon

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Idioms

moon(def 16).

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anchorite
a granular metamorphic rock.
a person who has retired to a solitary place for a life of religious seclusion.
a hobble or fetter for a horse or other animal.
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Origin of blue moon

First recorded in 1815–25

Words nearby blue moon

blue melilot, blue merle, blue mockingbird, blue mold, blue monday, blue moon, blue mould, blue mountains, blue mud, blue murder, blue myrtle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Words related to blue moon

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British Dictionary definitions for blue moon

blue moon

noun

the second full moon occurring within a calendar month
once in a blue moon informal very rarely; almost never
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012