Van driver (6)
I believe the answer is:
engine
(Other definitions for engine that I've seen before include "Motive machine" , "Machine with moving parts" , "search, maybe" , "machinery" , "Power unit" .)
I believe the answer is:
engine
(Other definitions for engine that I've seen before include "Motive machine" , "Machine with moving parts" , "search, maybe" , "machinery" , "Power unit" .)