“Waterproofing material for a sail, once” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.TAR is the answer to the New York Times crossword clue “Waterproofing material for a sail, once”. It was last seen in the puzzle of September 5, 2026, where it runs at 64 Down and fills 3 squares. It crosses 3 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.