After retiring, President died (4)
I believe the answer is:
abed
'after retiring' is the definition.
I can't tell whether this definition defines the answer.
'president died' is the wordplay.
'president' becomes 'Abe' (Abraham (Abe) Lincoln).
'died' becomes 'd' (abbreviation next to the year of someone's death).
'abe'+'d'='ABED'
Can you help me to learn more?
(Other definitions for abed that I've seen before include "dream location?" , "given blanket coverage?" , "in his hammock awaiting Santa?" , "Not yet risen" , "not exactly stirring" .)