No, it's generally talking about the page that comes up when you first open the browser, generally this is google or bing nowadays, or some portal your company or ISP redirects you to.

That homepage. Stand corrected. Thanks.-

yeah it might theoretically mean the first page they navigate to, but generally I think they mean the first page they start at. we had years of browsers and sites and malware all trying to hijack your homepage because it's valuable and often non-technical people don't know how to change it back and will just roll with it being what it is. I remember helping people who were confused if their homepage changed from aol or yahoo because they literally had no real concept of how to browse the internet and check their mail and such if the links weren't on the homepage.