Context #1
Carl: You owe me $80 for the Lakers ticket I got you.
Tony: Oh yeah. But I don’t have any dough on me now. Let’s go by the bank ATM machine and I’ll get that money I own you.
Context #2
Bethany: I heard the restaurant you work at was super busy last night. Did you get a lot of good tips?
Chrissy: Yeah, I worked so hard, but I didn’t mind because I need the extra dough.
Meaning: “dough” is an American slang expression used for “money.”