Busy court led by this man in charge (6)
I believe the answer is:
hectic
'busy' is the definition.
(thesaurus)
'court led by this man in charge' is the wordplay.
'court' becomes 'ct' (abbreviation used in road names).
'led by' is a charade indicator (letters next to each other) (some letters go in front of others).
'this man' becomes 'he' (he refers to a man).
'in charge' becomes 'ic' (abbreviation for 'in charge').
'ct' after 'he' is 'hect'.
'hect'+'ic'='HECTIC'
(Other definitions for hectic that I've seen before include "Involving feverish activity, chaotic" , "Frenetic" , "Marked by intense agitation - fevered" , "Frantic or feverish" , "Extremely busy - fevered" .)