Windshield device (5)
I believe the answer is:
wiper
'windshield device' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for wiper that I've seen before include "Windscreen cleaner" , "Something to eradicate" , "contact in the electrical world" , "Window-cleaner" , "car accessory" .)