Tilt, incline (4)
I believe the answer is:
lean
This clue is a double definition.
'tilt' is the first definition.
(I know that tilt can be written as lean)
'incline' is the second definition.
(I know that incline is a more specific form of lean)
(Other definitions for lean that I've seen before include "Be inclined - not fat" , "English film director" , "unremunerative" , "Slight - incline" , "Slant" .)