Orifice

Keep sand out of every orifice.

Make sure every orifice is covered before you enter the sandstorm.

Experts say any contact with a fluid containing the Ebola virus could cause infection, especially if it occurs at an orifice or wound that would provide entry into the bloodstream.

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.

the vagina and other orifices

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

For example, cultures that scorn open orifices of all kinds despise uninfibulated female genitals too[…]

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