Work out information (4)
I believe the answer is:
dope
I believe this clue is a double definition.
'work out' is the first definition.
(thesaurus)
'information' is the second definition.
(dope is a kind of information)
(Other definitions for dope that I've seen before include "Weed perhaps" , "Illegal drugs; fool" , "Idiot; information" , "Illegal drug; idiot" , "cheat thereat?" .)