Speckled bean (5)
I believe the answer is:
pinto
'speckled bean' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pinto that I've seen before include "A piebald pony" , "H [HORSE]" , "patchy horse" , "Spotted or piebald horse" , "Piebald horse (US)" .)