setting
The time and place where something, especially a story, happens.
A setting means the time and place where a story happens. When you read about hobbits in the Shire or kids exploring Narnia through a wardrobe, that combination of where and when is the setting. It includes both the location (a castle, a spaceship, a school) and when the story takes place (medieval times, the distant future, last Tuesday).
The setting shapes everything about a story. A mystery set in foggy Victorian London feels completely different from one set in a modern-day space station. The setting determines what characters wear, how they talk, what problems they face, and what tools they have to solve those problems. A pioneer story set in 1870 can't include smartphones or cars because those hadn't been invented yet.
Writers often describe the setting early in a story so readers can picture where they are. You might read about creaky floorboards in an old mansion, smell descriptions of a busy marketplace, or feel the biting air of a frozen tundra. These details help you imagine yourself right there in the story.
The word also applies outside of stories. The setting of a conversation might be a quiet library or a noisy cafeteria, which affects how people talk. You might adjust the settings on a device, like turning up the volume or changing the brightness. In that case, you are changing how certain features are “set” or positioned.