Precursor (10)
'precursor' is the definition.
(I know that precursor can be written as forerunner)
This is all the clue.
(Other definitions for forerunner that I've seen before include "one coming ahead" , "Precursor" .)
'precursor' is the definition.
(I know that precursor can be written as harbinger)
This is the entire clue.
(Other definitions for harbinger that I've seen before include "Early sign" , "sign of things to come" , "omen" , "Herald - forerunner" , "One announcing approach" .)