The most common and most likely answer to this crossword clue is the 7 letter word GROUCHO
I've seen this crossword clue in Independent
G
R
O
U
C
H
O
More clues leading to the result GROUCHO
- Miserable character, old Marx
- Malcontent with love for Marx?
- Complain about name-dropping in club
- Complaint linked to old arty club
- Try to catch rook that hurt amusing brother
- Comedian to voice discontent, adding nothing
- That hurt, supporting king with love for Marx
- American comedian's bunch not complete with south Indian actor-politician
- Complain, given nothing for old comic
- Criticism over made-up wisecracker?
Buddy explains!

The straight part
We know that "club" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case club = groucho.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.