Crawl is a fundamental movement pattern often used by infants as they develop motor skills. It involves moving on hands and knees, allowing babies to explore their environment and strengthen their muscles. This stage is crucial for coordination and balance, laying the groundwork for future mobility. In the context of web development, "crawl" refers to the process by which search engines like Google systematically browse the internet to index content. During this process, crawlers, also known as spiders or bots, follow links on web pages to discover new content and update existing information in their databases.