Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
The Wayback Machine - https://web.archive.org/web/20190210055747/https://yt3.ggpht.com/-yjj95JJQEm8/AAAAAAAAAAI/AAAAAAAAAAA/qkyW_xNpwSo/s68-c-k-no-mo-rj-c0xffffff/photo.jpg