(n) a firearm that reloads itself

Autoloader is a versatile term in IT that can refer to any sort of tool or resource that helps to automatically load or handle data or files.

An automatic loading system which allows for a tank to fire multiple shots in succession without a long pause for a reload. Vehicles equipped with autoloaders typically have magazines holding three to eight shots with short load times in-between. Once this magazine has been expended, the vehicle must reload the entire magazine, which usually takes [..]

A mechanic in World of Tanks where you get a set number of fast firing shells in a clip followed by a lengthy reload period. Many of the French tanks are autoloader vehicles.