Has no translation in an African language (5)
I believe the answer is:
shona
'an african language' is the definition.
(language of Zimbabwe)
'has no translation' is the wordplay.
'translation' is an anagram indicator.
'has'+'no'='hasno'
'hasno' anagrammed gives 'SHONA'.
'in' acts as a link.
(Other definitions for shona that I've seen before include "Language of southern Africa" , "African language" , "foreign language" , "Member of a Bantu people living in Zimbabwe" , "Scotswoman'" .)