vestibulum 前庭
ves·tib·u·lum /vɛˈstɪbjələm/ 名詞 (複vestibula)前庭,外生殖腔(昆蟲),孔腔
Ves·tib·u·lum n.; pl. Vestibula Zool. A cavity into which, in certain bryozoans, the esophagus and anus open. ◄ ►