What do you mean by Cloaking?

Cloaking is a search engine optimization technique in which the content or information presented to the user is different from that presented to search engine crawlers (i.e. spiders or bots) for better indexing. In other words, cloak definition is, the webserver is specially programmed to return different content to search engines than it returns to regular users, in an attempt to distort search engine rankings by making a cloak content.
It considered a Black hat SEO. The Search engine may permanently ban from our index any sites or site authors that engage in cloaking.