The most common and most likely answer to this crossword clue is the 7 letter word ENGLISH
I've seen this crossword clue in The Guardian
E
N
G
L
I
S
H
More clues leading to the result ENGLISH
- Like a Sassenach, possibly, touring his glen
- Single out hard school subject
- Language no good in priest’s hole, initially?
- Glen, upset, modified his language
- Shingle broken up for old printing type
- Nigel’s put out by Natasha’s first in Cyrillic language
- Lesson in cooking shin and leg
- Hard on the heels of swinging single people
- Play Nigel Short’s hardest openings — such as this one?
- “Shifting shingle” could describe Sheringham beach but not Llandudno’s
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 = english.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.
What does ENGLISH mean?
ENGLISH noun- Spinning or rotary motion given to a ball around the vertical axis, as in billiards or bowling.
- An unusual or unexpected interpretation of a text or idea, a spin, a nuance.