The most common and most likely answer to this crossword clue is the 8 letter word COMANCHE
C
O
M
A
N
C
H
E
More clues leading to the result COMANCHE
- American Indian from Taco? Manchester, apparently
- Officer and staff oppressing revolutionary native Americans
- Indian love story about hospital with Charlie as Romeo
- Native American Chief, possessed of firm head of hair
- Indian to appear round cowboy’s estate right away
- Happen to secure farm without roof, as plainsman
- Indian revolutionary follows company employee
- American people love Frenchman’s heart being worn on his sleeve
- Fresco Manchester’s exhibiting from an old American society
- Coachmen transported American people
Buddy explains!

The straight part
We know that "Language" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case language = comanche.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.