Define flashback and its effect on a traditional plot structure.
A flashback is a literary device that provides information about a character or a event, helping to clarify any missing piece to the reader. Flashbacks build and expand a character's background and personality through the aid of visual descriptions that take the reader back in time to a specific moment on someone's life.
On a traditional plot, flashbacks can provide a more enriching and complete structure by adding more elements that cohere the narrative as a whole.