Definition: Word "WaitStatus" means waiting for status or condition before an action can be taken, much like a waiter checking to ensure everything is ready before serving. It's used in programming to set up conditions before making actions (like opening a file), ensuring all necessary steps are handled. For instance, if you're setting up a program that waits for the user to press a button, it would start by checking whether the input device has been pressed and then proceed with other activities.