Doctor eloped, pinching kiss, and set off (7)
I believe the answer is:
explode
'set off' is the definition.
(I've seen this before)
'doctor eloped pinching kiss' is the wordplay.
'doctor' is an anagram indicator.
'pinching' indicates putting letters inside (taking inside).
'kiss' becomes 'x'.
'eloped' anagrammed gives 'eplode'.
'eplode' enclosing 'x' is 'EXPLODE'.
'and' acts as a link.
(Other definitions for explode that I've seen before include "Go off with a bang" , "Violently shatter" , "Blow up" , "Detonate" , "Pop" .)