An account or story of a dream; a tale about dreams.
昨夜見た不思議な夢物語を友達に話した。
I told my friend the strange dream story I had last night.
祖母は昔見た夢物語をよく語った。
My grandmother often told stories of dreams she had long ago.
その話はただの夢物語にすぎないと言った。
He said that story was nothing but a dream tale.
A fantastic or unrealistic story; a pipe dream (something fanciful or unlikely to come true).
借金だけで夢をかなえられるというのは夢物語だ。
The idea that you can realize your dreams just by taking on debt is a pipe dream.
彼の成功話は夢物語のように聞こえたが、実際は努力の結果だ。
His success story sounded like a fantasy, but in reality it was the result of effort.
そんな大金持ちになる計画は夢物語だと周囲は笑った。
People around him laughed that such a plan to become extremely rich was a pipe dream.