Drunk each time before meal (4,3)
I believe the answer is:
high tea
'meal' is the definition.
(high tea is a kind of meal)
'drunk each time before' is the wordplay.
'drunk' becomes 'high' (I've seen this before).
'each' becomes 'ea'.
'time' becomes 't' (abbreviation).
'before' says to put letters next to each other.
'ea' put after 't' is 'tea'.
'high'+'tea'='HIGH TEA'
(Other definitions for high tea that I've seen before include "Late afternoon meal which includes a cooked dish" , "A lofty kind of evening meal" , "Late-afternoon meal" , "Early evening meal" , "Early-evening meal" .)