High-kicking French dance (6)
I believe the answer is:
cancan
'high-kicking french dance' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cancan that I've seen before include "High-kicking dance of repetitive kind" , "Lively stage dance, doubly permissive" , "Parisian high-kicking dance" , "Lively French stage dance" , "High-kicking French dance, once considered naughty" .)