The most common and most likely answer to this crossword clue is the 6 letter word GAELIC
I've seen this crossword clue in The Daily Telegraph
G
A
E
L
I
C
More clues leading to the result GAELIC
- Green part in smoke that rolls over tongue
- Maybe Irish agile playing at speed of light
- Language coming from council eager for backing
- Special coffee from algae and lichen
- European replaces first line in French language
- Language making a comeback in CompSci league
- Perhaps Irish saga elicits something occult
- Leaders of guerillas and evacuees liaise in common tongue
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 = gaelic.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.