Nothing to share but words (7)
I believe the answer is:
oration
'words' is the definition.
(I've seen this before)
'nothing to share' is the wordplay.
'nothing' becomes 'O' (O resembles 0).
'to share' becomes 'ration' (a ration is a share of a limited resource).
'o'+'ration'='ORATION'
'but' is the link.
(Other definitions for oration that I've seen before include "Platform speech" , "A public or ceremonial speech" , "An eloquent speech" , "lecture" , "Ontario (anag)" .)