"Kote" is the Japanese word for "trowel". The "-chan" that comes after it is used for names, and can be translated to "little". Typically used for girls, it is a suffix used for familiarity and intimacy, the kind of word you would use for a close friend or niece.
The purpose of this series is to create something small and familiar. For whatever detailed work you need, anything from small corners to delicate patterns, these are what you can turn to.
Pronunciation help: (koh-teh) + (ch-ahn)