Have meal around six? Wonderful (6)
I believe the answer is:
divine
'wonderful' is the definition.
(I've seen this before)
'have meal around six?' is the wordplay.
'have meal' becomes 'dine'.
'around' is an insertion indicator.
'six?' becomes 'vi' ('vi' can be a synonym of 'six').
'dine' placed around 'vi' is 'DIVINE'.
(Other definitions for divine that I've seen before include "Find water" , "Sacred; excellent" , "Guess" , "Like a god; delightful" , "Apprehend" .)