Taxonomic category of fruit containing extremely healthy core (6)
I believe the answer is:
phylum
'taxonomic category' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'fruit containing extremely healthy core' is the wordplay.
'fruit' becomes 'plum' (plum is a kind of fruit).
'containing' indicates putting letters inside.
'extremely healthy core' becomes 'hy' (I can't justify this - if you can you should give a lot more credence to this answer).
'plum' enclosing 'hy' is 'PHYLUM'.
'of' is the link.
Can you help me to learn more?
(Other definitions for phylum that I've seen before include "part of the kingdom" , "Group of animals" , "Taxonomic category above class" , "Biological group" , "Selfless attitude" .)