Rumour mill may plug the basher's version (4,9)

I believe the answer is:

bush telegraph

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'rumour mill' is the definition.
The definition suggests a singular noun which matches the answer.

'plug the basher's version' is the wordplay.
'version' indicates anagramming the letters.
'plug'+'the'+'basher'='plugthebasher'
'plugthebasher' is an anagram of 'BUSH TELEGRAPH'.

'may' acts as a link.

Can you help me to learn more?

(Other definitions for bush telegraph that I've seen before include "Rapid transmission of information (including a newspaper)" , "Informal communications network" , "Supposed means of passing the word around" , "Message-bearer" , "Informal network for spreading news" .)

I've seen this clue in the Sydney Morning Herald.

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