"Journo" is a shortened version of the word "journalist." It refers to a person who writes news articles, reports on current events, and gathers information to share with the public. So, essentially, a journo is someone who works in journalism.
Sentences with «journo»
So it was that I and a group of journos from online men's magazines and humor sites had been ferried over from area hotels to watch a key bit of early action in the film being shot and, later, to meet with the talent. (blog.bullz-eye.com)
I have a mental list of games journos who are the very worst of the bunch. (eurogamer.net)
But Guardian columnist and former games journo says game still boasts «surprising moments of satire» (mcvuk.com)