Tocharian /təʊˈkɛəɹi.ən/adjective 2noun 2forms 1 adjective2 •[from 20th c.] Of or pertaining to the Tocharian languages or the Tocharians of the Tarim Basin. •Of or relating to the Tochari (people of Bactria). noun2 •[from 20th c.] Any member of a people who inhabited the Tarim Basin and spoke the so-called Tocharian languages. •Any member of the Tochari, a people who inhabited Bactria.Beyond the Attaci or Attacores, the Thyrians and Tocharians do inhabit; yea, and the Casirians, who now by this time belong to the Indians, & are a part of them. — 1634 formsTocharians