Broadcast outstanding poet's address (3)
I believe the answer is:
ode
'poet's address' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'broadcast outstanding' is the wordplay.
'broadcast' shows a homophone (sound like) (how the word might sound on the radio or TV).
'outstanding' becomes 'owed' (as in an outstanding debt).
'owed' sounds like 'ODE'.
Can you help me to learn more?
(Other definitions for ode that I've seen before include "Poem in praise of doe" , "A poem celebrating person or event" , "Poetic composition" , "Literary work" , "poetry" .)