Broadcast I read about (5)
I believe the answer is:
'broadcast' is the definition.
'i read about' is the wordplay.
'about' indicates an anagram.
'iread' is an anagram of 'AIRED'.
(Other definitions for aired that I've seen before include "Put to dry; said publicly" , "Broadcast; dried" , "Exposed to breeze for freshening - say damp clothes" , "Exposed for drying" , "Ventilated, or hung out to dry" .)