Language some Kurd uses (4)
I believe the answer is:
urdu
'language' is the definition.
(Urdu is an example)
'some kurd uses' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'URDU' is hidden in the letters of 'kurd uses'.
(Other definitions for urdu that I've seen before include "Pakistani language" , "Pakistani tongue" , "Language akin to Hindi" , "speech" , "Sanskrit language" .)