Drink to broken heart, being practical (4-2-5)
I believe the answer is:
down-to-earth
'practical' is the definition.
(I've seen this before)
'drink to broken heart' is the wordplay.
'drink' becomes 'down' (to down something can mean to drink it quickly).
'broken' is an anagram indicator.
'heart' with letters rearranged gives 'earth'.
'down'+'to'+'earth'='DOWN-TO-EARTH'
'being' acts as a link.
(Other definitions for down-to-earth that I've seen before include "Practical, no-nonsense" , "Sensible - practical - realistic" , "where Newton's apple fell?" , "Far from assuming" .)