Eg, The Nutcracker (6)
I believe the answer is:
ballet
'eg the nutcracker' is the definition.
(I know that The Nutcracker is a ballet)
This is all the clue.
(Other definitions for ballet that I've seen before include "Let lab open up for dance" , "Eg, Swan Lake" , "Type of dance" , "kind of skirt" , "eg Giselle" .)