What is "contextmenu"?

What is "contextmenu"?

I saw an example on jquery-practical-exercise
The entire code
  1. <!DOCTYPE html>
    <html>
    <head>
        <meta charset="utf-8" />
        <title></title>
        <script src="Scripts/jquery-2.1.0.min.js"></script>
    </head>
    <body>
        <script type="text/javascript">
            $(document).ready(function () {
                $(document).bind("contextmenu"function (e) {
                    return false;
                });
            
        </script>
    </body>
    </html>

My question is what is "contextmenu" here? By the bind

Inside the parentheses, There are three of them

  • eventType
    Type:   String
    A string containing one or more DOM event types, such as "click" or "submit," or custom event names.
  • eventData
    Type:   Anything
    An object containing data that will be passed to the event handler.
  • handler
    Type:   Function(   Event  eventObject )
    A function to execute each time the event is triggered.
 
So what is "contextmenu"? Is it eventType or eventData or something else?