Devilish old cigarette lighter! (7)
I believe the answer is:
lucifer
'lighter' is the definition.
(lucifer is a kind of lighter)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for lucifer that I've seen before include "Light" , "Devilish sort of match" , "flares up when struck" , "Beelzebub, Old Nick" , "once a match for > Dickens" .)