Crossword clues for the word: OSSEIN The word OSSEIN has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for OSSEIN Showing 1 to 6 of 6 results Clue(s) Bone substance Bone substance used in making gelatin Bone's basis Chief substance of bone tissue. Collagen component of bone Organic basis of bone.