1. To arrive somewhere, especially casually or late. The test had already begun when John rolled in, cool as a breeze. If we don't hit much traffic, I'd say we'll be rolling in around 9 or so.
2. To arrive at a steady, unstoppable pace. The money will be rolling in if we can tap into this market. I hear there's a big storm rolling in tomorrow morning.
roll in (something)
To have or have something coming in vast amounts. (Usually said of money, and mostly used in the continuous tense.) I wouldn't worry too much about the Smiths. They're rolling in cash. She's rolling in endorsements right now, but that doesn't mean she has the votes.
rolling in (something)
Having something in abundance, typically money. I hear her father is rolling in money, so I wouldn't be too worried about her future. Once we get this plan underway, we'll be rolling in dough in no time!
rolling in somethingand rolling in money; rolling in it
Fig. having large amounts of something, usually money. That family is rolling in money. Bob doesn't need to earn money. He's rolling in it.