dirty money
noun
mass noun
1
- money obtained unlawfully or immorally赃款; 黑钱：
the bank was found to have been laundering dirty money.
这家银行被发现一直在洗黑钱。
2
- Brit. extra money paid to people who handle dirty materials in the course of their work〈英〉（因在工作过程中与肮脏物品打交道而发的）污损补贴金。