Lime (from Arabic and French lim) is a term referring to a citrus fruit which is typically round, green, 3–6 centimetres (1.2–2.4 in) in diameter, and containing sour (acidic) pulp. There are several species of citrus trees whose fruits are called limes, including the Key lime, Persian lime, kaffir lime, and desert lime. Limes are a good source of vitamin C, and are often used to accent the flavours of foods and beverages. They are grown year-round and are usually smaller and less sour than lemons, although varieties may differ in sugar and acidic content.
Lime juice may be squeezed from fresh limes, or purchased in bottles in both unsweetened and sweetened varieties. Lime juice is used to make limeade, and as an ingredient (typically as sour mix) in many cocktails.
Lime extracts and lime essential oils are frequently used in perfumes, cleaning products, and aromatherapy.
In India, the lime is used in Tantra for removing evil spirits. It is also combined with Indian chillies to make a protective charm to repel the evil eye. Furthermore, it was believed that hanging limes over sick people cured them of the illness by repelling evil spirits lurking inside the body. Lime pickles are an integral part of Indian Cuisine. South Indian cuisine is so heavily based on lime that having either lemon pickle or lime pickle is considered a must of Onam Sadhya.