Wiktionary
alt. 1 (context idiomatic English) A system used by undeveloped society in remote regions for communication over long distances, such as drum sounds, word-of-mouth relay, or smoke signals. 2 (context idiomatic English) A gossip network. n. 1 (context idiomatic English) A system used by undeveloped society in remote regions for communication over long distances, such as drum sounds, word-of-mouth relay, or smoke signals. 2 (context idiomatic English) A gossip network.
Wikipedia
Bush Telegraph was a radio program on the Australian Broadcasting Corporation's Radio National network, broadcast weekdays (Monday-Friday) at 11-12am, presenting stories from rural and regional Australia. The show ended on Friday, December 19, 2014.
"Bush Telegraph" is the Australian country term for the informal network which spreads news and gossip through a region of rural or outback Australia.
Usage examples of "bush telegraph".
The answer to the famous *bush telegraph' in my opinion is pure telepathy.
By that amazing bush telegraph that seems able to outstrip even electronics, the people of Baghdad already knew their army was being crushed in the deserts of southern Iraq and Kuwait.
He'd had to let two families with children leave during the day (one of the men was black, the other in his late fifties) to take refuge with suburban friends, and the efficient bush telegraph had spread the news clear up to old Peterson's place that Vaun's near death was not being treated as a suicide.
The bush telegraph was slang for the unofficial lines of shipboard rumor and information and was widely regarded as faster and more authoritative than official channels.