Cabbage for an old king? (4)
I believe the answer is:
cole
I believe this is a double definition.
'cabbage' is the first definition.
(I know that cole is a type of cabbage)
'an old king?' is the second definition.
(nursery rhyme character Old King Cole)
'for' acts as a link.
(Other definitions for cole that I've seen before include "Old English king!" , "Elderly monarch" , "died in 2015" , "Old nursery rhyme king" , "Cabbage" .)