Figure used there (5)
I believe the answer is:
three
'figure' is the definition.
(three is a number or figure)
'used there' is the wordplay.
'used' indicates anagramming the letters.
'there' is an anagram of 'THREE'.
(Other definitions for three that I've seen before include "Number of blind mice" , "Start to count back, briefly" , "Number of strikes before you're out" , "There (anag.)" , "Number that's a crowd" .)