Within Lincoln I would stay (5)
I believe the answer is:
abide
'stay' is the definition.
(synonyms)
'within lincoln i would' is the wordplay.
'within' means one lot of letters goes inside another.
'lincoln' becomes 'abe' (Abraham Lincoln).
'i would' becomes 'I'd'.
'abe' placed around 'id' is 'ABIDE'.
(Other definitions for abide that I've seen before include "Accept" , "live in the past?" , "Tolerate; live" , "lodge" , "Hack" .)