Stay in Lincoln with concealed identity (5)
I believe the answer is:
abide
'stay' is the definition.
(synonyms)
'lincoln with concealed identity' is the wordplay.
'lincoln' becomes 'abe'.
'with concealed' means one lot of letters goes inside another.
'identity' becomes 'id' (I've seen this in other clues).
'abe' going around 'id' is 'ABIDE'.
'in' is the link.
(Other definitions for abide that I've seen before include "Tolerate; live" , "Put up with" , "Remain - tolerate" , "Stomach" , "Stand" .)