snowed up

Từ điển Oxford Advanced Learner 8th

▪ I. be snowed ˈin/ˈup idiom
to be unable to leave a place because of heavy snow
•We were snowed in for two days.
Main entry: ↑snow_idiom
 
▪ II. be snowed ˈup idiom
(especially of a road)to be blocked with snow
Main entry: ↑snow_idiom