repetidor

noun
  1. A device that receives a signal and retransmits it at a higher level or higher power, or onto the other side of an obstruction, so that the signal can cover longer distances without degradation. noun
    The wireless network was extended using a repetidor to ensure coverage throughout the building.
    In rural areas, a repetidor is often used to boost cellular signals.
  2. In some educational contexts, a student who repeats a year or course of study. noun
    After failing his exams, he became a repetidor and had to retake the entire year.
    The school has a special program to support repetidores and help them succeed.