Weathered siliceous limestone used as a powder or paste for polishing metals.
More example sentences
- For a glassy finish, use pumice or rottenstone (decomposed limestone).
- For older stains use a paste of rottenstone, baking soda or cigarette ashes mixed with mineral oil, linseed oil, or lemon oil.
- For the final touch, rub down the table using a thin paste of rottenstone.
Definition of rottenstone in:
- The British & World English dictionary