big money

Short definition from Wiktionary

Noun

1. 1
   A large amount of money, especially a significant source of revenue or income.
2. 2
   Large corporations, the people who run them, or corporate interest generally, seen as exerting political influence and prioritising profits over other political concerns.

Adjective

1. 1
   Involving or transacting a large amount of money.
2. 2
   Alternative form of big money.