Roaring sounds of puffers (7)
I believe the answer is:
bellows
This might be a double definition.
'roaring sounds' is the first definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe there's an association between them I don't understand?
'puffers' is the second definition.
Although both the answer and definition are plural nouns, I don't understand how they can define each other.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for bellows that I've seen before include "Accordion part" , "sings very loudly" , "Fan of fire" , "Air blower for fire" , "Device supplying an organ with air" .)