I'm returning the box sent round by the shopkeeper (7)
I believe the answer is:
chemist
'the shopkeeper' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'i'm returning the box sent round' is the wordplay.
'returning' says the letters should be written in reverse.
'the box' becomes 'chest' (chest is a kind of box).
'sent round' is an insertion indicator.
'im' in reverse letter order is 'mi'.
'mi' put inside 'chest' is 'CHEMIST'.
'by' is the link.
Can you help me to learn more?
(Other definitions for chemist that I've seen before include "Drug seller" , "Shop for drugs" , "Drug dispenser" , "Dispensing shop" , "Employee in pharmacy" .)