Start of transmission where ad's naughty? (9)
I believe the answer is:
watershed
'start of transmission where ad's naughty?' is the definition.
I can't tell whether this definition defines the answer.
'start of transmission where ad's naughty?' is the wordplay.
'start of' says to take the initial letters.
'naughty?' indicates anagramming the letters (I've seen 'naughty' mean this).
The initial letter of 'transmission' is 't'.
't'+'where'+'ads'='twhereads'
'twhereads' is an anagram of 'WATERSHED'.
Can you help me to learn more?
(Other definitions for watershed that I've seen before include "Turning-point in course of events, like ridge of high land" , "It's OK to swear after this" , "Turning-point in course of events, or catchment area" , "Dividing ridge between two rivers" , "Ridge between river valleys" .)