The term 'LILY: CALLA' is a crossword solution that refers to two different types of flowers. The first flower, LILY, is a popular garden flower that comes in many varieties and colors. It is known for its trumpet-shaped blooms and fragrant scent. The second flower, CALLA, is a member of the ARUM family, which is a genus of flowering plants. CALLA lilies are known for their large, white, waxy blooms and are often used in bouquets and floral arrangements.