Way to introduce a knight, one who speaks Pashto (6)
I believe the answer is:
pathan
'one who speaks pashto' is the definition.
(the Pashtuns or Pathans speak the Pashto language)
'way to introduce a knight' is the wordplay.
'way' becomes 'path' (path is a kind of way**).
'to introduce' means to remove the last letter (I've seen 'introducing' mean this).
'a' becomes 'an'.
'knight' becomes 'n' (chess).
'an' with its final letter taken away is 'a'.
'path'+'a'+'n'='PATHAN'
(Other definitions for pathan that I've seen before include "Afghanistani" , "Afghan" , "Member of majority people of Afghanistan" .)