Calcium oxide; unslacked lime; -- so called because when wet it develops great heat. See 4th Lime, 2.
A material that is mostly calcium oxide (CaO) or calcium oxide in natural association with a lesser amount of magnesium oxide. Quicklime is capable of combining with water to form hydrated lime.
A common name for calcium oxide, a fast-acting product added to the soil for decreasing acidity and to provide calcium as a plant nutrient.