Ceremony just broadcast (4)
I believe the answer is:
rite
'ceremony' is the definition.
(rite is a kind of ceremony)
'just broadcast' is the wordplay.
'just' becomes 'right' ('right' can be similar in meaning to 'just').
'broadcast' shows a homophone (sound like) (how the word might sound on the radio or TV).
'right' is a homophone of 'RITE'.
(Other definitions for rite that I've seen before include "Ceremony - ritual" , "Uncomplaining person" , "Ceremonial act" , "Religious ceremonial sounds correct" , "Ceremony, liturgy" .)