defog
[ dee-fog, -fawg ]
/ diˈfɒg, -ˈfɔg /
verb (used with object), de·fogged, de·fog·ging.
to remove the fog or moisture from (a car window, mirror, etc.).
Informal.
to make intelligible, specific, or obvious; clarify: In a lengthy interview the mayor defogged the issues in the transit strike.