Dandelion is a French word: Dent-de-lion, which means lion’s tooth. 

Diurectic herbs increase urinary flow so dandelion is definitely a diurectic herb. Dandelion cleans the soil of the heavy metals and it also has the same effect in the body. Anti-carcinogenic, estrogen-lowering, blood cholesterol lowering, cleans the blood, cleans the kidneys and the liver.
Traditionally it has been used for gallbladder inflammation, gall stones, jaundice, constipation, muscular
rheumatism, low urine output, for cleansing the liver, headaches, acne, red/irritated eyes, mood swings and PMS.
Dandelion can be eaten in a salad. People even drink dandelion wine or dry the root and roast it into a coffee.