The most common and most likely answer to this crossword clue is the 13 letter word GAIDHEALTACHD
G
A
I
D
H
E
A
L
T
A
C
H
D
Buddy explains!
The straight part
We know that "places for native tongue" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case places for native tongue = gaidhealtachd.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.