A literary device is a technique used by writers to convey their message, enhance their storytelling, or create a specific effect in their work. These devices can include elements such as metaphor, simile, alliteration, and imagery, which help to paint vivid pictures in the reader's mind or evoke emotions. By employing literary devices, authors can add depth and meaning to their narratives, making them more engaging and memorable. For example, using foreshadowing can hint at future events, while symbolism can represent larger ideas or themes, enriching the overall reading experience.