oo-sim-tsînn烏心錢

black money

black money; dirty money; ill-gotten money

English Wiktionary, “烏心錢” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%83%8F%E5%BF%83%E9%8C%A2 · confidence: Medium (Wiktionary, Hokkien)