Inclination to design pram (4)
I believe the answer is:
ramp
'inclination' is the definition.
(an inclined surface)
'design pram' is the wordplay.
'design' indicates anagramming the letters.
'pram' with letters rearranged gives 'RAMP'.
'to' acts as a link.
(Other definitions for ramp that I've seen before include "Incline" , "One's inclined" , "Sloping passage" , "Slope - swindle" , "cheat" .)