Second dessert for King Edward? (4)
I believe the answer is:
spud
'king edward?' is the definition.
(I've seen this before)
'second dessert' is the wordplay.
'second' becomes 's' (common abbreviation).
'dessert' becomes 'pud' (short for pudding).
's'+'pud'='SPUD'
'for' is the link.
(Other definitions for spud that I've seen before include "Charlotte perhaps" , "King Edward, say (slang)" , "One could be in jacket" , "short, stocky person" , "One might have an eye" .)