Cora's new boy (5)
I believe the answer is:
oscar
'boy' is the definition.
(I've seen this before)
'cora's new' is the wordplay.
'new' is an anagram indicator.
'coras' anagrammed gives 'OSCAR'.
(Other definitions for oscar that I've seen before include "heard on the radio after November" , "-- Wilde, author" , "Film-prize statuette" , "Librettist Hammerstein, d. 1960" , "Man" .)