Language that's bent or contorted (6)
I believe the answer is:
breton
'language' is the definition.
(Breton is an example)
'bent or contorted' is the wordplay.
'contorted' is an anagram indicator.
'bent'+'or'='bentor'
'bentor' with letters rearranged gives 'BRETON'.
'that's' is the link.
(Other definitions for breton that I've seen before include "from Northern France" , "Language of NW France" , "Person from Brittany" , "French language class" , "Cooked with cheese and/or breadcrumbs on top" .)