1. A device or mechanism that automatically loads material, ammunition, or data into a machine or system.
Usage: commonly used in military, industrial, and computing contexts
2. In programming, a software component that automatically loads classes, modules, or libraries into memory when needed.
Usage: technical; used in software development
3. A feature in a firearm that automatically feeds ammunition into the chamber.
Usage: military and firearms terminology

Examples

• The tank's autoloader allows the gunner to fire rounds more rapidly than manual loading would permit.
• Modern web frameworks use an autoloader to dynamically include PHP classes without explicit require statements.
• The industrial machine's autoloader reduces downtime by continuously feeding raw materials into the production line.
• The programmer configured the autoloader to handle all dependencies automatically.
• The cannon's autoloader jammed, forcing the crew to switch to manual operation.
• Java's autoloader system manages the loading of compiled class files at runtime.