Vegetables eaten by Toni on stage (6)
I believe the answer is:
onions
'vegetables' is the definition.
(onion is a kind of vegetable)
'eaten by toni on stage' is the wordplay.
'eaten by' indicates a hidden word.
'ONIONS' can be found hidden inside 'toni on stage'.
(Other definitions for onions that I've seen before include "Bulbous vegetables" , "England medium-fast bowler" , "Pungent bulbs (6)." , "Veg" , "Punguent bulbs" .)