Obliged to return something bought at the grocer’s (4)
I believe the answer is:
edam
'grocer's' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for edam that I've seen before include "Yellow cheese with a red covering" , "Cheese made in Holland" , "Kind of cheese" , "milk product" , "Dutch specialty" .)