High Quality Content by WIKIPEDIA articles! Mech tribe is one of the scheduled tribes of India and belong to Bodo-Kachari group of tribes. They belong to Mongoloid race and speak mainly Boro language, which is a Tibeto-Burman dialect but have got influenced by the Assamese language. The Mech people live in the Dooars region of West Bengal and parts of western Assam. The name Mech is supposed to be arrived from the Mechi River in the Tarai region. According to a belief, some ancestors of these people had resided in the region adjoining the Mechi river and subsequently they were named as Mech. Others say, the word Mech has come from the Sanskrit word Mleccha, meaning unclean. Today, a section of Mech people in West Bengal prefer to refer them as Bodo instead of Mech.