Broadcast correct ceremony (4)
I believe the answer is:
rite
'ceremony' is the definition.
(rite is a kind of ceremony)
'broadcast correct' is the wordplay.
'broadcast' indicates a 'sounds like' (homophone) clue (how the word might sound on the radio or TV).
'correct' becomes 'right' (synonyms).
'right' sounds like 'RITE'.
(Other definitions for rite that I've seen before include "Uncomplaining person" , "Religious ceremonial sounds correct" , "Established religious ceremony" , "Customary observance" , "Ceremony, liturgy" .)