orifice

A mouth or aperture, such as of a tube, pipe, etc.; an opening.

the orifice of an artery or vein; the orifice of a wound; he entered the cave's gaping orifice

As none of the ovicells were observed to be closed by the operculum, presumably because they were empty and the opercula were resting on the primary orifice rim, the ovicell closure type is subcleithral rather than cleithral [51 ], at least in some species of the genus.

One of the natural external openings of the human or animal body.

the vagina and other orifices

The maw-worm could emerge unexpectedly from any orifice, including, most alarmingly, the corner of people's eyes.

A stupid or objectionable person.

“Peanuts aren't nuts, you orifice. They're legumes.”