Leave role (4)

I believe the answer is:

part

I believe this is a double definition.

'leave' is the first definition.
(parting is a kind of leaving)

'role' is the second definition.
('part' can be a synonym of 'role')

(Other definitions for part that I've seen before include "Section of a whole" , "Portion of a whole" , "goodbye" , "Region" , "Sever; portion" .)

I've seen this clue in The Telegraph.

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