Objection to returning receptacle (3)
I believe the answer is:
tub
'receptacle' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'objection to returning' is the wordplay.
'objection' becomes 'but' (as in 'no ifs, no buts').
'to returning' is a reversal indicator.
'but' in reverse letter order is 'TUB'.
Can you help me to learn more?
(Other definitions for tub that I've seen before include "Pot (of e.g. ice-cream)" , "Large plant pot" , "'Broad, open vessel (3)'" , "Small round container" , "Large plant container" .)