Waves tires (5)
I believe the answer is:
flags
This clue could be a double definition.
'waves' is the first definition.
The answer and definition can be both related to communication as well as being plural nouns.
Perhaps you can see an association between them that I can't see?
'tires' is the second definition.
(I've seen this in another clue)
Can you help me to learn more?
(Other definitions for flags that I've seen before include "Banners" , "Tires; national symbols" , "Grows languid" , "Droops" , "Standards" .)