spoolerA program that controls spooling -- putting jobs on a queue and taking them off one at a time. Most operating systems come with one or more spoolers, such as a print spooler for spooling documents. In addition, some applications include spoolers. Many word processors, for example, include their own print spooler.
A good print spooler should allow you to change the order of documents in the queue and to cancel specific print jobs.