Dreye權威釋義|pipe dream

ph.

【口】幻想；空想；白日夢
Father's plan to build a forest cabin by the lake was just a pipe dream.
父親想在湖濱築一林中小屋的計畫不過是個美夢罷了。

同義參見:

以上來源於：《英漢大辭典》

n.

an unattainable or fanciful hope or scheme.

C19: referring to a dream experienced when smoking an opium pipe.

以上來源於：《簡明牛津英語詞典》