beacon (EN)
noun

noun “beacon”

sg. beacon, pl. beacons
  1. a fire lit to send a warning or signal, often about an approaching enemy
    As the enemy troops advanced, the villagers lit a beacon on the hilltop to warn the neighboring towns.
  2. a noticeable object placed on land or in shallow water to guide sailors and warn them of hazards
    The lighthouse served as a beacon, guiding ships safely around the treacherous rocks.
  3. figuratively, something that provides notice of hope or danger
    In the midst of the crisis, the charity's relief efforts were a beacon of hope to those in need.
  4. an electronic device that sends out a signal to nearby mobile devices, triggering certain functions when close by
    The museum installed beacons throughout the exhibits, which sent information to visitors' smartphones about the artwork.
  5. a small piece of code on a website that tracks user behavior or gathers data
    The company's website used a beacon to track user behavior and gather analytics for targeted advertising.