Ruddy wild cries at the end of the race! (6)
I believe the answer is:
'ruddy' is the definition.
'wild cries at the end of the race' is the wordplay.
'wild' indicates an anagram.
'at the end of' says to take the final letters.
The last letter of 'race' is 'e'.
'cries' with letters rearranged gives 'ceris'.
(Other definitions for cerise that I've seen before include "Light clear red" , "Light red colour" , "EEC, sir, is red" , "Light purplish red" , "Bright cherry-red colour" .)