The term "search engine rank" refers to a website's position in search results pages when specific keywords are queried on a search engine. The higher a site ranks, the more likely it is that users will visit and engage with its content. Search engines use complex algorithms to determine which sites should appear at the top of their results pages based on various factors such as relevance, popularity, and credibility. A high search engine rank can significantly impact a website's visibility, traffic, and overall success online.