Wiktionary
deep linking
n. (context Internet English) The practice of linking to a specific page or file within a website so as to bypass introductory pages, considered a violation of netiquette.
Wikipedia
Deep linking
In the context of the World Wide Web, deep linking is the use of a hyperlink that links to a specific, generally searchable or indexed, piece of web content on a website (e.g., "http://example.com/path/page"), rather than the website's home page (e.g., "http://example.com/").