It regularly admits actor wanting to dance? (9)
I believe the answer is:
nightclub
'it regularly admits actor wanting to dance?' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for nightclub that I've seen before include "Haunt" , "Hot spot" , "Place open late for entertainment, food and drink" , "disco" , "Venue for late shows" .)