orifice
Word family nounorifexorificeadjectiveorificial
or·i·fice /ˈɒrɪfɪs $ ˈɔː-, ˈɑː-/ noun [countableC] formal1 HBone of the holes in your body, such as your mouth, nose etc 〔身体上的〕孔,洞〔如嘴、鼻等〕various bodily orifices 人体上的各种孔洞
Origin orifice (1500-1600) Old French Late Latin orificium, from Latin os “mouth”