“Shape of the border between yin and yang” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.ESS is the answer to the New York Times crossword clue “Shape of the border between yin and yang”. It was last seen in the puzzle of March 2, 2025, where it runs at 15 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.