Crossword clues for the word: RENNIN The word RENNIN has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for RENNIN Showing 1 to 6 of 6 results Clue(s) Cheesemaking enzyme Coagulase Enzyme in milk Enzyme that curdles milk Milk coagulator Milk curdler