"Link juice" refers to the value or authority passed from one webpage to another through hyperlinks. When a website links to another, it can transfer some of its credibility and ranking power, which can help improve the linked page's position in search engine results. This concept is important in SEO (Search Engine Optimization) as it influences how search engines evaluate the relevance and trustworthiness of a webpage. The amount of link juice a page can pass depends on various factors, including the quality of the linking site, the number of links on the page, and the relevance of the content. High-quality links from reputable sources, such as authority websites, carry more weight and can significantly boost a site's visibility online.