Crossword Genius

Urge what rolls sometimes have (3,2)


I believe the answer is:

egg on

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'urge' is the definition.
(to egg someone on is to urge them to do something)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for egg on that I've seen before include "this face is obvious embarrassment" , "'Incite, urge (3,2)'" , "Incite, encourage" , "Push" , "Encourage (someone to do a risky thing)" .)

I've seen this clue in the Sydney Morning Herald.
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