The name Lily is derived from the name of the flower, which is a symbol of purity. The word 'lily' is ultimately derived from the Latin word 'lilium'. Lilies are a group of flowering plants that are significant in culture and literature across much of the world. The name has been used in literature, such as in the character Lily Bart from the novel 'The House of Mirth' by Edith Wharton, and is also borne by notable individuals like the American actress Lily Tomlin.