In LP Print Service: A grouping of printers, created by the system administrator, that serves to distribute print requests. Upon receiving a print request, the first available printer in the group prints it. See also print request.
In network programming for UNIX-based systems: The component of a module that performs functions on messages passing through the module. Each module has two queues: a read queue passing messages upstream and a write queue passing messages downstream. The read queue contains the open and close procedures for the module. A queue typically contains put and service procedures, a message list, and private data. See also buffer, pop system call , push system call, put procedure.