Tartary; Tatars
Historical term referring to various nomadic tribes that lived in the region north of China, often used in pre-modern contexts.
Tartary is a historical name for the region that once stretched north of China.
Marco Polo's travelogue contains descriptions of Tartary.
Tartary buckwheat; green buckwheat
Standard kanji spelling for the historical region and peoples.
From Chinese 韃靼 (Dádá), a historical name for the Tatar tribes. The Japanese reading だったん is derived from the Chinese pronunciation.