Language of some Theban Turks? (5)
I believe the answer is:
bantu
'language' is the definition.
(Bantu is an example)
'some theban turks?' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'BANTU' is hidden within 'theban turks'.
'of' is the link.
(Other definitions for bantu that I've seen before include "Group of languages including Swahili and Xhosa" , "A language and people of Africa" , "Type of language" , "Group of Niger-Congo languages" , "Family of southern African languages" .)