Jazzy felt hat: nothing to make you jump here (3,4)
I believe the answer is:
the flat
'nothing to make you jump here' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'jazzy felt hat' is the wordplay.
'jazzy' indicates anagramming the letters.
'felt'+'hat'='felthat'
'felthat' anagrammed gives 'THE FLAT'.
Can you help me to learn more?
(Other definitions for the flat that I've seen before include "racing?" , "races?" , "Perhaps home" .)