Definitions for "Meta robots tag"
Keywords:  txt, robots, nofollow, noindex, spiders
The META robots tag (robots.txt) allows the website authors to keep website folders from being indexed by Search Engines.
A HTML tag that give instructions to spiders to either index the page or not. For e.g. all, none, index, noindex, follow and nofollow.
A tag used to identify to search engines web pages that should not be indexed by them. Not all search engines will read this tag and the more conventional robots.txt file should be used for this purpose.