Runs daily and rides out without us (6)
I believe the answer is:
editor
'runs daily' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for editor that I've seen before include "one in charge of 10 [PRESS GANG] ?" , "Journalist in charge of publication" , "The person who determines the final content of the newspaper" , "Chief journalist" , "Someone in the rag trade" .)