Simple Definition of pipe dream
: a hope, wish, or dream that is impossible to achieve or not practical
Full Definition of pipe dream
: an illusory or fantastic plan, hope, or story
Examples of pipe dream in a sentence
His plan for starting his own business was just a pipe dream.
<opening our own restaurant has long been a pipe dream>
Origin and Etymology of pipe dream
from the fantasies brought about by the smoking of opium
First Known Use: 1890
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