Immure is a verb that means to enclose within. 

The Latin word murus (MOO roos) refers to a ‘wall.’ To immure someone is to wall them in. Our word of the day has been with us since the late 16th century. Here’s an example of it in use:

Last night’s movie was one of the scariest I’ve ever seen. Especially the part where the villain tried to immure the hero inside a chamber of horrors.