Midday, beginning to eat, but who's here? (2-3)
I believe the answer is:
no-one
'who's here?' is the definition.
I know nothing about this answer so I can't tell whether this works.
'midday beginning to eat' is the wordplay.
'midday' becomes 'noon' (synonyms).
'beginning to' suggests taking the first letters.
The initial letter of 'eat' is 'e'.
'noon'+'e'='NO-ONE'
'but' acts as a link.
Can you help me to learn more?
(Other definitions for no-one that I've seen before include "Nobody" , "Not a single person" , "Not a soul" , "Not one person" .)