A "red dot" typically refers to a small, circular mark that is red in color. It can be used in various contexts, such as indicating a location on a map, marking an item for sale, or serving as a visual cue in presentations. The red color often signifies importance or urgency, drawing attention to the marked area. In the context of technology, a "red dot" can also refer to a type of sight used in firearms, known as a red dot sight. This optical device projects a red dot onto a lens, helping shooters aim more accurately. It is popular among hunters and sport shooters for its ease of use and quick target acquisition.