The hair color in between blonde and brown. The word comes from the word "hazel", which means an eye color in between green and brown. People with crazel hair, especially girls, often call their hair blonde but it's a little too dark to be considered truly blonde.
Girl 1: Blondes have more fun!
Girl 2: You're not blonde. Your hair is crazel.
Girl 1: It's definitely blonde.
Girl 2: No, it's crazel. Get over it.