Origin

This character combines a plant radical at the top with a component suggesting a container or covering below. The bottom part, which also appears in characters related to closing or covering, contributes the core meaning of "lid" or "cover." By pairing the plant indicator with this covering component, the character suggests something that covers or protects plants—like a lid or flap placed over vegetation. Over time, the meaning broadened to refer to any kind of cover or lid, and the plant element became more of a classifier marking this as a word related to botanical or natural contexts rather than strictly changing the meaning.