patcher

/ˈpætʃər/
noun
  1. A person or thing that fixes or repairs something, especially by applying a patch.
    • The software patcher updated the program to fix the security issue.
    • The patcher came to fix the hole in the roof.
    • My grandmother was a skilled patcher of old clothes.
  2. A computer program or tool that applies updates or fixes to software.
    • The patcher downloaded and installed all the necessary files.
    • Make sure you run the patcher before trying to play the game online.
    • I used a patcher to update the game to the latest version.