Charming party held by great guy you hardly know (12)
I believe the answer is:
acquaintance
'know' is the definition.
(thesaurus)
'charming party held by great guy you hardly' is the wordplay.
I cannot really see how this works, but
'charming' could be 'quaint' (I've seen this before) and 'quaint' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for acquaintance that I've seen before include "contact" , "Person known slightly" , "Slight knowledge" , "Someone one knows slightly" , "Person one knows slightly" .)