Pro drug smugglers getting signs of things to come (11)
I believe the answer is:
forerunners
'signs of things to come' is the definition.
I can't judge whether this definition defines the answer.
'pro drug smugglers getting' is the wordplay.
'pro' becomes 'for' (I've seen this in another clue).
'drug' becomes 'e' (E is another name for ecstasy).
'smugglers' becomes 'runners' ('runner' can be a synonym of 'smuggler').
'getting' means one lot of letters go next to another.
'for'+'e'+'runners'='FORERUNNERS'
Can you help me to learn more?
(Another definition for forerunners that I've seen is " Envoys".)