Abandon joint set to be cooked (8)
I believe the answer is:
jettison
'abandon' is the definition.
(thesaurus)
'joint set to be cooked' is the wordplay.
'to be cooked' indicates an anagram.
'joint'+'set'='jointset'
'jointset' with letters rearranged gives 'JETTISON'.
(Other definitions for jettison that I've seen before include "Get rid of" , "Chuck overboard" , "Throw (into the sea)" , "Remove" , "Deliberately dump overboard" .)