Language Danish unit translated (10)
I believe the answer is:
hindustani
'language' is the definition.
(I've seen this before)
'danish unit translated' is the wordplay.
'translated' indicates anagramming the letters.
'danish'+'unit'='danishunit'
'danishunit' is an anagram of 'HINDUSTANI'.
(Other definitions for hindustani that I've seen before include "Converting device" , "Language" , "tongue" , "Indians" , "Dialect of Hindi" .)