make a pile
To earn a very large amount of money, especially by doing something very successfully. We'll make a pile if we can manage to secure a trading partner in China. I hear Sarah is making a pile with sales from her latest novel.
make a (or your) pile
become rich. informal Pile here means ‘a pile of money’.
make a/your ˈpile
(informal) make a lot of money: If you want to make a pile, don’t go into the restaurant business.