Stop to get varnish (6)
I believe the answer is:
finish
I believe this is a quadruple definition!!
'stop' is the first definition.
(I know that stop can be written as finish)
'to' is the second definition.
(thesaurus)
'get' is the third definition.
(thesaurus)
'varnish' is the fourth definition.
(thesaurus)
(Other definitions for finish that I've seen before include "Perfect" , "Terminate, conclude" , "Culminate" , "Bring to an end" , "Complete or terminate" .)