Support magazine with right driving mechanism (9)
I believe the answer is:
propeller
'driving mechanism' is the definition.
(I've seen this before)
'support magazine with right' is the wordplay.
'support' becomes 'prop' (prop is a kind of support).
'magazine' becomes 'elle' (fashion magazine).
'with right' becomes 'r' (common abbreviation. I am not sure about the 'with' bit.).
'prop'+'elle'+'r'='PROPELLER'
(Other definitions for propeller that I've seen before include "Mechanical device" , "Driving mechanism" , "Driver" , "It rotates to push against air or water" , "Screw (on a boat)" .)