Celebrity in court following second disorderly arrest (9)
I believe the answer is:
superstar
'celebrity' is the definition.
(thesaurus)
'in court following second disorderly arrest' is the wordplay.
'in court' becomes 'up'.
'following' says to put letters next to each other.
'second' becomes 's' (common abbreviation).
'disorderly' indicates anagramming the letters.
'arrest' anagrammed gives 'erstar'.
'up' after 's' is 'sup'.
'sup'+'erstar'='SUPERSTAR'
(Other definitions for superstar that I've seen before include "Big name" , "Very famous person" , "Celeb" , "Dazzling virtuoso" , "Dazzling genius" .)