Tackle crack soldiers in heart of ghetto (9)
I believe the answer is:
equipment
'tackle' is the definition.
(thesaurus)
'crack soldiers in heart of ghetto' is the wordplay.
'crack' becomes 'quip' ('quip' can be a synonym of 'crack').
'soldiers' becomes 'men' (I've seen this before).
'in heart of' is an insertion indicator.
'ghetto' becomes 'et' (I can't explain this - if you can you should give a lot more credence to this answer).
'quip'+'men'='quipmen'
'quipmen' placed into 'et' is 'EQUIPMENT'.
Can you help me to learn more?
(Other definitions for equipment that I've seen before include "Apparatus, gear" , "Kit, apparatus" , "4 [TACKLE]" , "Set of instruments that perform a service" , "fitting" .)