To seal an opening, so as to prevent the entry of draughts.
That prevents the entry of draughts.
To cloister, confine, imprison or hole up: to lock someone up or seclude oneself behind walls.
To put or bury within a wall.
To wall in.
To trap or capture (an impurity); chiefly in the participial adjective immured and gerund or gerundial noun immuring.