black money

noun
1.
income earned surreptitiously or illegally, usually in cash, and not reported to the government so as to avoid paying taxes on it.
Origin
1965-70
British Dictionary definitions for black money

black money

noun
1.
that part of a nation's income that relates to its black economy
2.
any money that a person or organization acquires illegally, as by a means that involves tax evasion
3.
(US) money to fund a government project that is concealed in the cost of some other project
Slang definitions & phrases for black money

black money

noun phrase
  1. Money obtained illegally, esp by politicians and organized-crime operations, that must be ''laundered'' before it can be used: Money that derives from an illegal transaction is considered ''dirty'' or ''black'' cash
  2. Income not reported for tax purposes; skim (1970s+)