The most common and most likely answer to this crossword clue is the 4 plus 5 letter word BARN DANCE
I've seen this crossword clue in The Guardian
B
A
R
N
D
A
N
C
E
More clues leading to the result BARN DANCE
- Hoedown in a brand new northern church
- Prohibit canned nuts in traditional social gathering
- Damaged car banned in social event
- Crash car banned in country event
- Hay maybe spoils a brand new church
- Lawyers’ den can be arranged for a social occasion
- Party offering drinks facility? Then get canned, drunk!
- Rural event‘s place to drink riotously and neck, mostly
Buddy explains!

The straight part
We know that "social event" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case social event = barn dance.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.