Of inclement or visibility-reducing weather, to completely enclose someone, something, or some place, especially as results in closure, immobility, or inoperability. Often used in passive constructions. We were totally socked in by the rain, so no planes were allowed to depart. I just think there's no point going on the hike if we're socked in by fog like this—we won't be able to see a thing! Heavy fog socked in the town for nearly a week.