Go as a group (4)
I believe the answer is:
gang
I believe this is a double definition.
'go' is the first definition.
(thesaurus)
'a group' is the second definition.
(gang is a kind of group)
'as' acts as a link.
(Other definitions for gang that I've seen before include "Crew, band" , "set of tools" , "Organised group of labourers" , "criminal family" , "Maybe criminal group" .)