Special backing on board (7)
I believe the answer is:
notable
'special' is the definition.
(thesaurus)
'backing on board' is the wordplay.
'backing' shows that the letters should be reversed in order.
'board' becomes 'table' (both can mean food).
'on' back-to-front is 'no'.
'no'+'table'='NOTABLE'
(Other definitions for notable that I've seen before include "Ton bale (anag.)" , "Worthy of record" , "Striking" , "Worth remembering" , "Celebrated" .)