Leaves with a double alternative (5)
I believe the answer is:
quits
'leaves' is the definition.
('quit' can be a synonym of 'leave')
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for quits that I've seen before include "On equal terms" , "Even - leaves" , "Abandons" , "Leaves - all square" , "On even terms again" .)