Wind power beautiful, ultimately (6)
I believe the answer is:
drivel
'wind' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'power beautiful ultimately' is the wordplay.
'power' becomes 'drive' (I can't explain this - if you can you should give a lot more credence to this answer).
'ultimately' suggests the final letters.
The last letter of 'beautiful' is 'l'.
'drive'+'l'='DRIVEL'
Can you help me to learn more?
(Other definitions for drivel that I've seen before include "Nonsense, garbage" , "Spoken nonsense" , "Claptrap" , "Cobblers" , "Stupid talk" .)