
The 蝦夷 constituted a group of people who lived in northeastern Honshū in the Tōhoku region which was referred to as 道の奥 in contemporary sources. The original date of the Emishi is unknown, but they definitely occurred sometime in the B.C. era, as they are believed to have advanced the Jōmon. The first mention of them in literature was...
Found on
http://en.wikipedia.org/wiki/Emishi

Derogative term for the AINU.
Found on
http://www.samurai-archives.com/vocab.html
No exact match found.