Demon drink? (6)
I believe this clue is a double definition.
'demon' is the first definition.
(thesaurus)
'drink?' is the second definition.
(I've seen this in other clues)
(Other definitions for spirit that I've seen before include "The non-physical part of a person" , "Vital force - apparition" , "Ghost or animation" , "Liquor or spectre" , "Supernatural entity" .)