That which encloses, shuts in, or confines; a fence, wall, barrier, case, cover, setting, etc. Obsolete.

transferred. That which encloses, enshrines, or screens, or in which something dwells.

That which encloses, an enclosing wall or barrier; the cover of a book.

That which encloses; an enclosure; a bar.

transferred and figurative. Something that encloses or guards.