Idiotic order to a chap facing bull (8)
I believe the answer is:
toreador
'chap facing bull' is the definition.
(type of bullfighter)
'idiotic order to a' is the wordplay.
'idiotic' is an anagram indicator.
'order'+'to'+'a'='ordertoa'
'ordertoa' with letters rearranged gives 'TOREADOR'.
(Other definitions for toreador that I've seen before include "fighter in ring" , "Man honoured to be given an ear" , "Adore rot (anag)" , "one features in The Ring" , "Bullfighter in Carmen" .)