Definitions for "Trackback"
Keywords:  blog, blogger, ping, weblog, comment
Trackback is a mechanism by which two sites can stay informed each time one site refers to the other by means of trackback 'pings'. In Confluence, Trackback is enabled from the Administration Console.
a (hyper)link to the blog from some other website or blog
a link from an entry in another blog or Web site to an entry in your blog
a continuation of a dialogue, not a traffic-building gimmick