Brotherly tosh? (3)
I believe the answer is:
'tosh?' 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?
'brotherly' is the wordplay.
'ROT' is hidden in amongst the letters.
However, I am uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for rot that I've seen before include "Decay, wither", "Deteriorate", "Putrefy", "Corruption", "Rubbish (colloq.)".)