mouth
noun
1.
the opening through which food is taken in and vocalizations emerge
Derived from:
mouth 2.
the externally visible part of the oral cavity on the face and the system of organs surrounding the opening
Derived from:
mouth 3.
an opening that resembles a mouth (as of a cave or a gorge)
4.
the point where a stream issues into a larger body of water
5.
a person conceived as a consumer of food
6.
8.
the opening of a jar or bottle