口 /kǒu/ angolul

bite [bites]▼(mouthful)
noun
[UK: baɪt] [US: ˈbaɪt]

meatus [meatuses]▼(tubular opening)
noun
[UK: mˈiːtəs] [US: mˈiːɾəs]

orifice [orifices]▼(mouth or aperture, as of a tube, pipe)
noun
[UK: ˈɒ.rɪ.fɪs] [US: ˈɔː.rə.fə.sə]