Fun starting in 1913 irritated a lot left out (9)
I believe the answer is:
crossword
'fun' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for crossword that I've seen before include "(Usually) black and white puzzle" , "One of these, first published December 1913 ..." , "Letter puzzle" , "that should make you think" , "Puzzle with squares" .)