The name of a tree (Citrus limonum) and its fruit; a native of Southern Asia, but now cultivated in the south of Europe, especially in Sicily, in the West Indies, and in California and Florida. It forms a straggling bush, and is more delicate than the orange. There are many varieties of the lemon, but the most common are the common or Genoa lemon, the thin-skinned lemon, the sweet lemon, and the citron lemon. The chief products of the lemon are the juice and the oil. The juice has a peculiar and agreeable flavor, due to citric acid, and is much used in the well-known refreshing drink called lemonade. It is also very useful in the prevention and cure of scurvy. The rind of the lemon is used by cooks and confectioners for flavoring. The oil of lemons is extracted from the outside part of the peel either by pressure or by distillation, and is much used in medicine and in perfumery.