The term INDIGO PLANT is composed of three words: ANIL (4 letters), ALOE (4 letters), and INDIGO (6 letters). ANIL is a blue dye obtained from plants, such as the INDIGO plant, which is native to India. Aloe is a succulent plant with thick leaves that are used in traditional medicine. INDIGO is a deep blue color that is obtained from the INDIGO plant. The INDIGO plant is a shrub that produces a blue dye used in textiles and other products.