immure

Like "mural," "immure" comes from "murus," a Latin noun that means "wall." "Immurare," a Medieval Latin verb, was formed from "murus" and the prefix in- (meaning "in" or "within"). "Immure," which first appeared in English in the late 16th century, literally means "to wall in" or "to enclose with a wall," but it has extended meanings as well. In addition to senses meaning "imprison" and "entomb," the word sometimes has broader applications, essentially meaning "to shut in" or "to confine." One might remark, for example, that a very studious acquaintance spends most of her time "immured in the library" or that a withdrawn teenager "immures himself in his bedroom every night."