在线字典厣蟹脐,蟹腹下面的薄壳 。又指螺类介壳口圆片状的盖。拼音yǎn部首厂笔画11画繁体厴字义蟹脐,蟹腹下面的薄壳 。又指螺类介壳口圆片状的盖。英文释义operculum (Latin: little lid); a covering flap (in various branches of anatomy)