orifice

noun3

1. •
   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
2. •
   One of the natural external openings of the human or animal body.

   • The maw-worm could emerge unexpectedly from any orifice, including, most alarmingly, the corner of people's eyes. — 1999
3. •
   (slang, offensive) A stupid or objectionable person.

   • “Peanuts aren't nuts, you orifice. They're legumes.” — 2016