A drink around middle of day? Another time (5)
I believe the answer is:
again
'another time' is the definition.
('again' can be a synonym of 'another time')
'a drink around middle of day?' is the wordplay.
'drink' becomes 'gin' (gin is a kind of drink**).
'around' means one lot of letters goes inside another.
'middle of' indicates the central letters.
The central letter of 'day' is 'a'.
'gin' going around 'a' is 'gain'.
'a'+'gain'='AGAIN'
(Other definitions for again that I've seen before include "second term" , "Furthermore" , "One more time, encore" , "10 10 [AGAIN" , "Next time" .)