Charge put on time and distance (4)
I believe the answer is:
feet
'distance' is the definition.
'charge put on time' is the wordplay.
'charge' becomes 'fee' (fee is a kind of charge**).
'put on' means one lot of letters go next to another.
'time' becomes 't'.
'fee'+'t'='FEET'
'and' is the link.
(Other definitions for feet that I've seen before include "Base supports" , "Have both on the ground to be practical" , "Linear Units of a third of a yard" , "On which we stand" , "Three of these in yard" .)