Catch gentleman's shot in snooker club (9)
I believe the answer is:
nightspot
'club' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for nightspot that I've seen before include "Place for after-dark entertainment" , "club, perhaps" , "venue providing entertainment" , "Club, disco" .)