Language of an artist; a master, I see (7)
I believe the answer is:
aramaic
'language' is the definition.
(I know that Aramaic is a language)
'an artist a master i see' is the wordplay.
'an' becomes 'a'.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'a master' becomes 'MA' (Master of Arts).
'see' becomes 'C' (the word for the letter, according to Chambers).
'a'+'ra'+'ma'+'i'+'c'='ARAMAIC'
'of' is the link.
(Other definitions for aramaic that I've seen before include "Language of Near East" , "tongue" , "Semitic language spoken in New Testament times" , "Ancient Semitic language" , "Old Middle-Eastern language" .)