Located in suburb, a new block (3)
I believe the answer is:
ban
'block' is the definition.
(I've seen this in another clue)
'located in suburb a new' is the wordplay.
'located in' indicates a hidden word.
'BAN' can be found hidden inside 'suburb a new'.
(Other definitions for ban that I've seen before include "outlaw" , "Veto" , "Bar, prohibition" , "the calling of young vassals" , "'Forbid, prohibit (3)'" .)