Means of identifying girl's case study headings (5)
I believe the answer is:
discs
'study headings' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how they can define each other.
'means of identifying girl's case' is the wordplay.
'means of identifying' becomes 'dis' (I can't explain this - if you can you should give a lot more credence to this answer).
'girl's' becomes 'cilla's' (woman's name).
'case' suggests removing the centre.
'cillas' with its middle removed is 'cs'.
'dis'+'cs'='DISCS'
Can you help me to learn more?
(Other definitions for discs that I've seen before include "Layers of cartilage between vertebrae - they may slip" , "Flat, circular plates" , "Records" , "Flat, thin circular objects" , "They're round and flat" .)