Sprinter's bean? (6)
I believe the answer is:
runner
This clue is a double definition.
'sprinter's' is the first definition.
(I've seen this before)
'bean?' is the second definition.
(runner bean is a kind of bean)
(Other definitions for runner that I've seen before include "Kind of bean is a fast mover" , "Percussion instrument" , "Long narrow carpet" , "Canvas shoe with a rubber sole" , "Branch from the base of plant that produces new plants" .)