Cheap drink (3,5)
'drink' is the definition.
(water is an example)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for water that I've seen before include "Transparent liquid" , "Adam's ale" , "Superior's full of it" , "something damp" , "What makes the Somme" .)
'cheap drink' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tap water that I've seen before include "Ordinary drink" , "Best and cheapest drink?" , "Drink from mains" , "cheap drink" , "Cold running drink?" .)