Even out when you have a lucky streak (4)
I believe the answer is:
roll
'even out' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for roll that I've seen before include "bakery's product" , "Move like a wheel" , "Rob while sleeping < to pass" , "Barm cake" , "Move like a ball" .)