Managed to have one drink of precipitation (9)
I believe the answer is:
rainwater
'precipitation' is the definition.
(thesaurus)
'managed to have one drink' is the wordplay.
'managed' becomes 'ran' (both can mean organised or was in charge of).
'to have' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'drink' becomes 'water' (water is an example).
'ran' enclosing 'i' is 'rain'.
'rain'+'water'='RAINWATER'
'of' is the link.
(Other definitions for rainwater that I've seen before include "Result of downfall" , "that gets to earth!" .)