Tshwa language

Tsoa, Tshwa or Tshuwau, also known as Kua and Hiechware, is an East Kalahari Khoe dialect cluster spoken by several thousand people in Botswana and Zimbabwe.

One of the dialects is Tjwao (formerly spelled 'Tshwao'), the only Khoisan language in Zimbabwe, where "Koisan" is a language officially recognised in the constitution. Provided by Wikipedia