The name Lily is a Latin baby name. In Latin the meaning of the name Lily is: Lily (after the flower). Pure. English Meaning: The name Lily is an English baby name. In English the meaning of the name Lily is: Lily flower.Pure. The flower lily is a symbol of innocence; purity and beauty.reek Meaning: The name Lily is a Greek baby name. In Greek the meaning of the name Lily is: Lily. Hebrew Meaning: The name Lily is a Hebrew baby name. In Hebrew the meaning of the name Lily is: Lily.