Have (3)
'have' is the definition.
(possessing is a kind of having)
This is the entire clue.
(Other definitions for possess that I've seen before include "influence" , "Have - control" , "Have as one's own" , "Have and hold" , "Own, keep" .)
'have' is the definition.
(have can mean to eat or consume)
This is the entire clue.
(Other definitions for eat that I've seen before include "Be corrosive" , "tolerate in diet" , "Take food" , "Scoff" , "Make food disappear" .)
'have' is the definition.
(to have something is to own it)
This is all the clue.
(Other definitions for own that I've seen before include "Control" , "Possess or confess" , "Have in one's possession" , "Allow" , "Acknowledge" .)