See Eve barter about bones (9)
I believe the answer is:
vertebrae
'bones' is the definition.
(vertebra is a kind of bone)
'see eve barter about' is the wordplay.
'about' indicates anagramming the letters.
'eve'+'barter'='evebarter'
'evebarter' anagrammed gives 'VERTEBRAE'.
(Other definitions for vertebrae that I've seen before include "Bones of back" , "Bits of skeleton" , "Bones of the spinal column" , "Backbone segments" , "Bits of bone" .)