Blazed trails (3)
I believe the answer is:
led
'blazed trails' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for led that I've seen before include "Went in advance of others" , "Light-emitting diode (abbr.)" , "Shown the way" , "had the edge" , "Went ahead" .)