Passed the drink around, one fine day! (5)
I believe the answer is:
given
'passed' is the definition.
The answer and definition can be both related to change as well as being past participle verbs.
Maybe you can see an association between them that I can't see?
'drink around one fine day' is the wordplay.
'drink' becomes 'gin' (gin is an alcoholic drink).
'around' indicates putting letters inside.
'one fine day' becomes 've' (I can't explain this - if you can you should give a lot more credence to this answer).
'gin' going around 've' is 'GIVEN'.
'the' is the link.
Can you help me to learn more?
(Other definitions for given that I've seen before include "Handed over; an 18 dn" , "Bestowed" , "Accepted as true" , "Lent?" , "Known fact" .)