1. 颏：有托盛食物以及与上唇协同钳住食物的作用,此外也用来检测食物.下唇的基部称为后颏(postmentum),几乎完全和头壳愈合,不能活动.后颏相当于愈合的左右轴节,又分为不明显的亚颏(Submentum)和颏(mentum).除上述3种口肢(mouth appendages)外,

2. 唇基节：06.2214 颚唇 gnathochilarium | 06.2215 唇基节 mentum | 06.2216 前唇基节 promentum

3. 颏 下颚：mentotransverse 颏横位 | mentum 颏 下颚 | menu 项目单 功能选择单 菜单

4. 颏(颐下唇茎节：颐骨 mentomeckelian bone | 颏(颐下唇茎节 mentum | 琴鸟科 MENURIDAE

noun

1. a projection below the mouth of certain mollusks that resembles a chin

2. the protruding part of the lower jaw

    Synonym: chin

3. a projection like a chin formed by the sepals and base of the column in some orchids