Meaning of the word "pipe dream" in English

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

pipe dream

US /ˈpaɪp ˌdrim/
UK /ˈpaɪp ˌdrim/
"pipe dream" picture

Noun

1.

an unrealistic hope or fantasy

Example:
His plan to become a millionaire overnight is just a pipe dream.
Getting a promotion without working hard is a pipe dream.
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