noun
rim of a bowl or vessel
Refers to the upper edge or lip of a container such as a bowl, cup, or pot. Common in descriptions of pottery and tableware.
この茶碗は口縁が少し欠けている。
This teacup has a small chip on its rim.
noun
peristome
Technical term in botany for the ring of teeth around the mouth of a moss capsule. Rare outside specialist contexts.
蘚苔類の口縁は胞子の放出を調節する。
The peristome of bryophytes regulates spore release.