Allowed to be heard (5)
I believe the answer is:
aloud
'allowed to be heard' is the definition.
I can't tell whether this definition defines the answer.
'allowed to be heard' is the wordplay.
'to be heard' shows a homophone (sound like).
'allowed' is a homophone of 'ALOUD'.
Can you help me to learn more?
(Other definitions for aloud that I've seen before include "intended for audience" , "For all to hear" , "Take part in, link" , "it is said" , "Not sotto voce" .)