Support civil engineer creating bore (6)
I believe the answer is:
pierce
'bore' is the definition.
(thesaurus)
'support civil engineer' is the wordplay.
'support' becomes 'pier' (type of structure).
'civil engineer' becomes 'CE' (abbreviation).
'pier'+'ce'='PIERCE'
'creating' is the link.
(Other definitions for pierce that I've seen before include "Punch" , "Riddle" , "Stab" , "Penetrate with a sharp instrument" , "Break skin of" .)