Wherein the wine bottles can get dust on (3)
I believe the answer is:
bin
'dust on' 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 the remainder of the clue.
Can you help me to learn more?
(Other definitions for bin that I've seen before include "Discard" , "Wine store; throw away" , "Domestic receptacle for rubbish" , "Ordinary household receptacle for rubbish" , "wine storage facility" .)