(1) A list on which messages are placed when they are sent to a user ID or device description. The system-recognized identifier for the object type is *MSGQ.
(2) In interprocess communications, a mechanism that allows a process to communicate with other processes by sending messages to a process, receiving messages from a process, or performing control operations on a process.
(3) A set of messages that are waiting to be processed by a program or to be sent to a terminal, display, or workstation.
(4) A named destination to which messages can be sent until they are retrieved by programs that service the queue.