Subject of Tchaikovsky's Suite (10)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
nutcracker
(Other definitions for nutcracker that I've seen before include "The work of Tchaikovsky" , "Opener for brazils, almonds, etc" , "The --, ballet by Tchaikovsky" , "Bird of the crow family" , "Brazil under pressure from this" .)