Firework beauty (7)
I believe the answer is:
cracker
This could be a double definition.
'firework' is the first definition.
(cracker is a kind of firework)
'beauty' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?
Can you help me to learn more?
(Other definitions for cracker that I've seen before include "Great joke - terrible joke's container?" , "it may be specially for Christmas" , "pulled at Christmas?" , "Seasonal firework" , "See 8" .)