One likes to have people for dinner (8)
I believe the answer is:
cannibal
'dinner' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'one likes to have people' is the wordplay.
I cannot quite see how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is located in the answer.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for cannibal that I've seen before include "One who eats its own species" , "Animal that eats it own kid (8)." , "One eating own species" , "Fellow consumer" , "One eats human flesh" .)