v. phr. , informal To get a lot of money unfairly; get rich by being dishonest. The policeman lined his pockets by taking bribes. The inspector lined his pockets by permitting contractors to use poor building materials.
Compare: FEATHER ONE'S NEST.
LINE ONE'S POCKETS
Meaning of LINE ONE'S POCKETS in English
American idioms English vocabulary. Английский словарь американских идиом. 2012