Meaning of the word "pie in the sky" in English

What does "pie in the sky" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

pie in the sky

US /paɪ ɪn ðə skaɪ/
UK /paɪ ɪn ðə skaɪ/
"pie in the sky" picture

Idiom

1.

an idea or plan that is pleasant to imagine but impossible to achieve

Example:
His dream of becoming a millionaire overnight is just pie in the sky.
The politician's promises sounded like pie in the sky to many voters.
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