Crossword clues for the word: FIRN The word FIRN has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for FIRN Showing 1 to 8 of 8 results Clue(s) Alpine snowfield Glacial field Glacier-making snow Granular snow atop a glacier Mountain snow Snow at the top of a glacier. Snow atop a glacier Swiss snowfield