Practice gives us time (5)
I believe the answer is:
usage
'practice' is the definition.
(I know that usage is a type of practice)
'us time' is the wordplay.
'time' becomes 'age' (an age is a period of time).
'us'+'age'='USAGE'
'gives' is the link.
(Other definitions for usage that I've seen before include "Convention" , "Custom; practice" , "management" , "etiquette" , "Utilisation" .)