Locomotive's front (10)
I believe the answer is:
cowcatcher
'locomotive's front' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cowcatcher that I've seen before include "metal frame" , "Device on old American trains to push aside obstructions" , "Maybe rancher" , "Lasso" , "part of train?" .)