Pineapples: sad, green, withered (8)
I believe the answer is:
grenades
'pineapples' is the definition.
(pineapple can informally mean a grenade)
'sad green withered' is the wordplay.
'withered' indicates an anagram.
'sad'+'green'='sadgreen'
'sadgreen' with letters rearranged gives 'GRENADES'.
(Other definitions for grenades that I've seen before include "Grandees holding small bombs" , "Hand-thrown bombs for grandees" , "Hand-held explosives" , "Small hand-bombs" , "Small bombs thrown by hand" .)