Definition: A homepage is the main page of a website. Like a cover of a book or the front of a store, its function is to welcome people and to inform them of the overall purpose of the website. The homepage offers an index of navigation that organizes content and leads to other parts of the website.
FirstClickSEO Commentary: The homepage usually accumulates the most PageRank score since its url is usually where other sites link to the most. The url of a homepage usually ends in a domain name extension such as .com, .org, .edu, etc. Other terms used to describe a homepage are front page, main web page and webserver directory index. Even though the home page is designed to be the entry point of the website, people can go directly to other pages within the site without ever seeing the front page