A bulbous herb isolated from the plant Allium sativum with potential antineoplastic activity. Garlic contains a number of different organosulfur compounds, some of which have displayed antineoplastic activity. Or A European plant that has a bulb used to flavor food. It has also been used in some cultures to treat certain medical conditions including high cholesterol, high blood pressure, infections, and cancer. The scientific name is Allium sativum.