created sense approved 厣/厴 · yǎn · covering flap
厣 / 厴
yǎn
covering flap
a small lid or flap-like anatomical structure that covers an opening or another part
在某些解剖学文献中，厣被用来形容覆盖在脑岛上的组织。
punctuation
created sense approved 厣/厴 · yǎn · operculum
厣 / 厴
yǎn
operculum
the lid or trapdoor-like structure that closes the opening of a snail shell or covers the gills of a fish
这种螺类的厣非常坚硬，可以抵御掠食者。
noun