Further broadcast in hours (7)
I believe the answer is:
nourish
'further' is the definition.
Although both the answer and definition are verbs in their base form, I don't understand how they can define each other.
'broadcast in hours' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'in'+'hours'='inhours'
'inhours' with letters rearranged gives 'NOURISH'.
Can you help me to learn more?
(Other definitions for nourish that I've seen before include "Give sustenance to" , "I rush on (anag.)" , "encourage growth" , "support" , "Provide with sustenance for growth" .)