Protest in court unsettled jury ultimately (6)
I believe the answer is:
outcry
'protest' is the definition.
(I've seen this before)
'court unsettled jury ultimately' is the wordplay.
'unsettled' indicates anagramming the letters.
'ultimately' suggests the final letters.
The last letter of 'jury' is 'y'.
'court' is an anagram of 'outcr'.
'outcr'+'y'='OUTCRY'
'in' acts as a link.
(Other definitions for outcry that I've seen before include "Public clamour" , "A storm of protest" , "Exclamations of opposition" , "Great fuss" , "Widespread protest - clamour" .)