Answer: defogs

AnswerCrossword Clue
DEFOGS

Melts the mist

DEFOGS

Clears up, as a windshield

DEFOGS

Clears the windshield, say

DEFOGS
Clears, as a windshield
DEFOGS
Clears the windshield
DEFOGSClears, in a way
DEFOGSImproves visibility
DEFOGSImproves windshield visibility