Skimp acting part to make an impression (6)
I believe the answer is:
impact
'an impression' is the definition.
(thesaurus)
'skimp acting part' is the wordplay.
'part' indicates the answer is hidden within the clue.
'IMPACT' is hidden within 'skimp acting'.
'to make' acts as a link.
(Other definitions for impact that I've seen before include "Impression" , "Serious effect" , "Strong effect" , "Result" , "Force or shock of a collision" .)