Why does Éléonore call Louise "Chibi-Louise"? In Zero no Tsukaima, when Louise's older sister, Éléonore, is first seen, she shouts, "Louise! Chibi-Louise!" She calls Louise this many times, as pictured below.



What does this expression mean, and why does Éléonore use it when the rest of Louise's family does not?
The word "Chibi" (ちび or チビ), means "short person" or a "small child".

Louise is the vertically challenged youngest sister in the family. So it makes perfect sense for her older sisters to poke fun at her with the name "Chibi-Louise". (or "short Louise")