This is the 11937th most frequent Russian word.
застрявшем
"Stuck" or "trapped."
Here the use of 'застрявшем' is to describe a car that is stuck.
Я помог другу выбраться из застрявшем в грязи автомобиле.
I helped a friend to get out from a car stuck in the mud.
In this example, 'застрявшем' is used in a narrative context to describe a bus in a specific state.
Он рассказал о застрявшем в снегу автобусе.
He told about a bus stuck in the snow.
The word 'застрявшем' is used here as an attribute to define the truck's condition in the discussion.