Listen in, as dope very briefly translated (9)
I believe the answer is:
eavesdrop
'listen' is the definition.
(eavesdropping is a kind of listening)
'as dope very briefly translated' is the wordplay.
'briefly' means to remove the last letter.
'translated' indicates anagramming the letters.
'as'+'dope'+'very'='asdopevery'
'asdopevery' with its last letter taken off is 'asdopever'.
'asdopever' anagrammed gives 'EAVESDROP'.
'in' is the link.
(Other definitions for eavesdrop that I've seen before include "Overhear" , "Listen to bug" , "Hold secret hearing" , "Listen in secret" , "Listen secretly to others' conversations" .)