Roulette ball limits circular movement (4)
I believe the answer is:
roll
'movement' is the definition.
(roll is a kind of movement)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for roll that I've seen before include "See 7" , "Cylinder (of paper etc)" , "Go over and over" , "Rob while sleeping < to pass" , "See 19" .)