Question

the default name for the small icon that represents a web site or page, and is displayed in the browsers, typically at the beginning of the url address field, is:

Answer 1

That's a favicon. A web-browser will normally look for a file called favicon.ico on the web-server, but with the following metatag, you can specify what file to look for:

<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />