Kira Kira means "glittering" in Japanese. It was the first word Katie learned, and it's a very memorable one. Katie and Lynn used this word to describe many things throughtout the book. Katie and Lynn both thought of Kira Kira as things they like, such as: the sky, animals, the ocean, etc. They thought of Kira Kira as things that are special. They think of people's eyes as Kira Kira because it is unique and they vary in colors. This is what they meant when they used the word Kira Kira. At the end of the book Katie refers Lynn as Kira Kira. Katie saw Lynn as a glowing figure, who stood out from the rest. Katie thought she was the most beautiful girl in the world. I would describe stars as Kira Kira. Stars are all different.