Mountain lake (4)

I believe the answer is:

tarn

'mountain lake' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for tarn that I've seen before include "High water" , "Small mountain lake" , "Mountain pool: French department" , "Scottish mountain lake" .)

I've seen this clue in The Independent, The Guardian, The Times, The Mirror, The Telegraph, the Evening Standard and The New York Times.

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.