Stage a robbery carrying tools (4)
I believe the answer is:
gear
'tools' is the definition.
(thesaurus)
'stage a robbery carrying' is the wordplay.
'carrying' indicates a hidden word.
'GEAR' is hidden within 'stage a robbery'.
(Other definitions for gear that I've seen before include "Cogwheel - equipment" , "Equipment; dress" , "Toothed wheel mechanism" , "Toothed wheel that interlocks with another" , "Clothes -- paraphernalia" .)