One who runs errands (5)
I believe the answer is:
gofer
'one who runs errands' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for gofer that I've seen before include "Assistant who runs errands (slang)" , "Slang, an employee who runs errands" , "One running errands" , "caddie?" , "Forge (anag.)" .)