Mean to finalise it after a drink (7)
I believe the answer is:
portend
'mean' is the definition.
(thesaurus)
'finalise it after a drink' is the wordplay.
I cannot quite see how this works, but
'finalise' could be 'end' (I've seen this in another clue) and 'end' is present in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
The remaining letters 'por' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'to' is the link.
Can you help me to learn more?
(Other definitions for portend that I've seen before include "Omen" , "Presage, bode" , "Herald" , "forecast" , "Threaten" .)