When your friend tells you every detail of how she tripped over a rock, broke her ankle, and then got into a car accident on the way to the hospital, she is sharing a long, involved story known as a saga.
The word saga has its origins in the Middle Ages. In those days, a saga was an historical tale of the first families who lived in Norway or Iceland. Today the word is used to describe a very complicated or detailed series of events. A saga is the kind of long, drawn-out story that can cause the people who hear it to roll their eyes in boredom.