Desire, craving (8)
I believe the answer is:
appetite
I believe this is a double definition.
'desire' is the first definition.
(I know that appetite is a type of craving)
'craving' is the second definition.
(I know that appetite is a type of craving)
(Other definitions for appetite that I've seen before include "thirst" , "enthusiasm" , "Natural desire to satisfy a need" , "demand" , "'Strong desire, craving (8)'" .)