Shakespeare character, terribly spoilt (6)
I believe the answer is:
pistol
'shakespeare character' is the definition.
'pistol' can be an answer for 'character' (I have seen 'Shakespearean character' mean 'pistol' so perhaps 'character' could also mean 'pistol'). I'm unsure of the 'shakespeare' bit.
'terribly spoilt' is the wordplay.
'terribly' indicates an anagram.
'spoilt' is an anagram of 'PISTOL'.
Can you help me to learn more?
(Other definitions for pistol that I've seen before include "Small gun" , "Arm" , "making an appearance in Shakespeare's King Henry V" , "Shakespearean character" , "Officer's side-arm" .)