Distance moved or flung (7)
I believe the answer is:
furlong
'distance' is the definition.
(I've seen this before)
'moved or flung' is the wordplay.
'moved' indicates anagramming the letters.
'or'+'flung'='orflung'
'orflung' anagrammed gives 'FURLONG'.
(Other definitions for furlong that I've seen before include "A few chains" , "One eighth of a mile" , "220 yards" , "Imperial unit of length, an eighth of a mile" , "1/8th of a mile" .)