Crossword Genius

Continued amassing money, or surrendered? (6,4)

Ross

I believe the answer is:

rolled over

I'm a little stuck... Click here to teach me more about this clue!

'continued' is the definition.
The definition and answer can be both to do with motion as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

I don't understand the remainder of the clue.

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