I agree that a lot of browsers call it the "home page" or similar, but I don't think a lot of people call it that, so the term is ambiguous at best. How many people know that their browser has a Start Page (often customizable) and a Home Page (optional, pick a URL) in the first place?

Last time I had one, it was a big collection of work-related links, back when you could fit all the "important" documentation portals for a LAMP stack on one screen. :-)