Kailan is a unisex name of Celtic origin meaning "purity" or "keeper of the keys." It is a unique and modern name that is gaining popularity in recent years. Those with the name Kailan are known for their strong sense of integrity, honesty, and loyalty. They are often admired for their calm and composed demeanor, as well as their ability to keep a level head in challenging situations. Overall, Kailan is a name that exudes strength, grace, and resilience.