If you've come here to, just turn yourself over to the police and tell them where you got all the money. It's probably for the better.
This definition has evolved to include any form of hiding income (or sources of income) in the interests of avoiding tax, although the problem posed by non-specific 'cover-all' statements means that it is open to loopholes because of the vast grey areas.
Money laundering has been practised for over 6000 years, but the term itself comes from the prohibition era of american history.
2. when you wash your pants and there is still money inside them