Crossword clues for the word: OILSTONE The word OILSTONE has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for OILSTONE Showing 1 to 9 of 9 results Clue(s) Honing device Knife-sharpener's tool Sharpener Surface for sharpening Tool sharpener Tool-sharpening aid Tool-sharpening device Type of sharpening device Whetting device.