Average cuts of vegetables (8)
I believe the answer is:
parsnips
'vegetables' is the definition.
(parsnip is a kind of vegetable)
'average cuts' is the wordplay.
'average' becomes 'par' (average score in golf).
'cuts' becomes 'snips' (snip is a kind of cut).
'par'+'snips'='PARSNIPS'
'of' acts as a link.
(Other definitions for parsnips that I've seen before include "Things growing in garden" , "Snip spar, oddly, of the vegetables" , "food" , "Fine words don't butter them" , "Snip spar with the vegetable" .)