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sock someone or something in
[for fog] to cause someone or something to remain in place. The heavy fog socked us in for six hours. The fog socked in the airport for an hour.
Close down an airport or other facility due to thick fog or other weather conditions impeding visibility, as in The airport was socked in all morning and air traffic was at a standstill, or We finally got to the peak and were totally socked in-there was no view at all. The sock referred to here is probably a windsock, as decisions to close an airport are made in part on the basis of observations of wind-socks, which indicate wind direction. The expression was first recorded in 1944.
To surround or enshroud someone or something with dense clouds or fog, often preventing movement or operation: Fog socked in the airport. The mountain was socked in with clouds.