What does the idiom “(Once In A) Blue Moon” mean?
Definition:
Very rarely.
For example:
“Once in a blue moon you see the Aurora here, but it’s not like farther north.”
What does the idiom “(Once In A) Blue Moon” mean?
Definition:
Very rarely.
For example:
“Once in a blue moon you see the Aurora here, but it’s not like farther north.”
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