Tongue in Teheran (5)

I believe the answer is:

farsi

(Other definitions for farsi that I've seen before include "Persian language" , "Iranian language, also widely spoken in Afghanistan" , "Iran's official language" , "Language of Iran" , "foreign language" .)

I've seen this clue in the Newsday.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.