Ran back to argue, being limited (6)
I believe the answer is:
narrow
'being limited' is the definition.
('narrow' can be similar in meaning to 'limited')
'ran back to argue' is the wordplay.
'back' shows that the letters should be reversed in order.
'to argue' becomes 'row'.
'ran' backwards is 'nar'.
'nar'+'row'='NARROW'
(Other definitions for narrow that I've seen before include "... not one" , "Cramped" , "Circumscribed" , "Restricted in width." , "Strait, not wide" .)