fifth wall

== English == === Etymology === By analogy with fourth wall. === Noun === fifth wall (plural fifth walls) (theater) The division between the fictional world depicted, and the actual actors, props, etc. (art) The divide between critics or audience members and author or theater practitioner. (theater) Any of various other divisions between groups of people in the theatre. (interior design) The ceiling. (interior design) The floor. Used other than figuratively or idiomatically: see fifth,‎ wall.