The term "enqueue" refers to the process of adding an item to a queue, which is a data structure that follows the First-In-First-Out (FIFO) principle. In a queue, the first item added is the first one to be removed. Enqueuing is commonly used in computer science for managing tasks, such as scheduling processes in operating systems or handling requests in web servers. When an item is enqueued, it is placed at the end of the queue, waiting for its turn to be processed. This operation is essential for maintaining order and efficiency in various applications, including print spooling, task scheduling, and message queuing systems.