Gang member is rarely thrown around (6)
I believe the answer is:
tsotsi
'gang' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tsotsi that I've seen before include "Young urban black criminal (S. Africa); toss it (anag.)" , "Gangster" , "Cape thug?" , "young hooligan" , "young black thug from South Africa" .)