An incline (4)
I believe the answer is:
ramp
'an incline' is the definition.
(I know that incline can be written as ramp)
This is the entire clue.
(Other definitions for ramp that I've seen before include "fleece?" , "Smoothed-out stairs" , "Slope - swindle" , "aircraft steps?" , "Inclination - swindle" .)