noun
frame story; frame narrative; frame tale
A literary technique where a main narrative sets the stage for one or more embedded stories. Used in literary criticism and discussion of works like The Canterbury Tales or The Decameron.
『千夜一夜物語』は枠物語の代表例だ。
One Thousand and One Nights is a classic example of a frame story.
この小説
This novel employs a frame narrative structure.