noun, noun which may take the genitive case particle 'no'
getting rich quick; making a fortune at a single stroke
A yojijukugo expressing the idea of suddenly acquiring great wealth, often through a single lucky break or speculative venture. Can be used as a noun or adjectivally with の.
彼は一攫千金を夢見て株に手を出した。
He started trading stocks, dreaming of getting rich quick.
一攫千金のチャンスはそう転がっていない。
Opportunities to make a fortune at a single stroke don't come around that often.