Gibson left after me
I believe the answer is:
mel
'gibson' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'left after me' is the wordplay.
'left' becomes 'L' (common abbreviation).
'after' means one lot of letters go next to another.
'l' put after 'me' is 'MEL'.
Can you help me to learn more?
(Other definitions for mel that I've seen before include "-- Brooks, film director" , "Honey" , "- - Gibson (actor)" .)