Package Mirror
Noun · Open Source
Definitions
A replicated server that hosts copies of packages from a central repository to improve availability, speed, and geographic access. Mirrors are important in large open source ecosystems because package distribution load is both constant and globally distributed.
In plain English: A copy of a package repository hosted elsewhere to make downloads faster or more reliable.
Example: "The university used a local package mirror so installs didn’t depend on a slow international link."