snowed in (passive)
Definition: to be prevented from leaving your house because there is too much snow.
E.g.1: During the winter we have a lot of snow. In fact, last winter we were snowed in for a week!
E.g.2: There’s too much snow to get the car out of the garage – I’ll have to phone work and tell them I’m snowed in.
This phrasal verb cannot be separated.