Somebody coming back on board (7)
I believe the answer is:
notable
'somebody' is the definition.
(thesaurus)
'coming back on board' is the wordplay.
'coming back' says the letters should be written in reverse.
'board' becomes 'table' (both can mean food).
'on' backwards is 'no'.
'no'+'table'='NOTABLE'
(Other definitions for notable that I've seen before include "VIP" , "Outstanding" , "well known" , "Celebrated" , "Big noise" .)