Holder of drink, holding another that's been emptied (6)
I believe the answer is:
bearer
'holder' is the definition.
(bearer is a kind of holder)
'drink holding another that's been emptied' is the wordplay.
I cannot really see how this works, but
'another' could be 're' (I've seen this in other clues) and 're' is found in the answer.
The remaining letters 'bear' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for bearer that I've seen before include "agent" , "Carrier as of news" , "One who helps to carry something - maybe news" , "He presents bill" , "One who carries, maybe a coffin" .)