Excellent spirit that can remove nail polish (7)
I believe the answer is:
acetone
'can remove nail polish' is the definition.
I can't judge whether this definition defines the answer.
'excellent spirit' is the wordplay.
'excellent' becomes 'ace' (I've seen this before).
'spirit' becomes 'tone' (synonyms).
'ace'+'tone'='ACETONE'
'that' is the link.
Can you help me to learn more?
(Other definitions for acetone that I've seen before include "Inflammable liquid" , "Industrial solvent" , "chemical is the solution" , "Remover of nail polish" , "Volatile stuff" .)