Some land a part in Layer Cake after being called back (4)
I believe the answer is:
acre
'some land' is the definition.
(unit of land)
'a part in layer cake after being called back' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'part' could be 're' (re is a kind of part) and 're' is present in the answer.
A single letter 'c' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for acre that I've seen before include "Levant sea port" , "once occupied by Crusaders" , "Imperial land measurement" , "Measure of land area" , "Four roods - Israeli port" .)