Travellers in shire avoiding universal argument (11)
I believe the answer is:
controversy
'argument' is the definition.
(I know that argument can be written as controversy)
'travellers in shire avoiding universal' is the wordplay.
'travellers' becomes 'rovers' (rover is a kind of traveller).
'in' indicates putting letters inside.
'shire' becomes 'county' (I've seen this before).
'avoiding' indicates named letters should be taken away.
'universal' becomes 'U' (film certificate).
'county' with 'u' taken out is 'conty'.
'rovers' placed within 'conty' is 'CONTROVERSY'.
(Other definitions for controversy that I've seen before include "War of opinions" , "Debate (whose pronunciation causes debate!)" , "Prolonged public dispute" , "Heated dispute" , "Polemics" .)