Breezy society girl making a broadcast (8)

I believe the answer is:

debonair

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'breezy' is the definition.
(thesaurus)

'society girl making a broadcast' is the wordplay.
'society girl' becomes 'deb' (short for debutante in fashionable society).
'making a broadcast' becomes 'onair' (I am not sure about this - if you are sure you should believe this answer much more).
'deb'+'onair'='DEBONAIR'

Can you help me to learn more?

(Other definitions for debonair that I've seen before include "Suave and refined" , "Sprightly" , "Jaunty and sophisticated" , "Suave and genial" , "Elegant, jaunty" .)

I've seen this clue in the Evening Standard.

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