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A Sotho language spoken in Lesotho, where it is the national language, and in South Africa, where it is an official language.
(Languages) the dialect of Sotho spoken by the Basotho: an official language of Lesotho. Also called: Southern Sotho Former name: Basuto
Se•so•tho(səˈsu tu, -ˈsoʊ toʊ)
any of the languages spoken by the Sotho, esp. the language of the southern group of Sotho, living mainly in Lesotho and adjacent parts of South Africa.