MacGuffin in Citizen Kane got out of bed and returned call (7)
I believe the answer is:
rosebud
'macguffin in citizen kane' is the definition.
I can't tell whether this definition defines the answer.
'got out of bed and returned call' is the wordplay.
'got out of bed' becomes 'rose' (I've seen this before).
'and' is a charade indicator (letters next to each other).
'returned' shows that the letters should be reversed in order.
'call' becomes 'dub' (both can mean to name).
'dub' reversed gives 'bud'.
'rose'+'bud'='ROSEBUD'
Can you help me to learn more?
(Other definitions for rosebud that I've seen before include "(Poetically) a pretty young girl" , "Bored us (anag.)" , "Unopened flower - pretty young woman" , "one with potential to bloom" , "Young flower - Citizen Kane's last word" .)