用
よう · you · JLPT N4 · noun
business
📋 You have a you (用): an errand that needs YOU to handle it
用 means use, so a 用 is something you are of use for: an errand or business to take care of. The reading よう sounds like English you with a long o. 用がある = I have something to do; 用事 (ようじ) is the fuller word for errand.
用 — pictograph of a bucket or wooden pail
用 originally depicted a bucket or container, possibly a sacrificial vessel made of wood. Over time it was borrowed to mean 'to use' or 'employ,' losing its concrete object sense. The modern meaning 'use' has been standard since early classical Chinese.