I peter out after performing revolutionary dance? (9)
I believe the answer is:
pirouette
'revolutionary dance?' is the definition.
(type of spinning dance move)
'i peter out after performing' is the wordplay.
'after' says to put letters next to each other.
'performing' indicates an anagram.
'i'+'peter'+'out'='ipeterout'
'ipeterout' with letters rearranged gives 'PIROUETTE'.
(Other definitions for pirouette that I've seen before include "Whirl round on one's toes" , "Spin on one foot" , "A dancer's spinning movement on tiptoe" , "Take turn on foot" , "Balletic whirl" .)