Orifice
Or´i`fice
| n. | 1. | A mouth or aperture, as of a tube, pipe, etc.; an opening; |
| Noun | 1. |  orifice - an aperture or hole opening into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart" |
| n. | 1. | A mouth or aperture, as of a tube, pipe, etc.; an opening; |
| Noun | 1. | orifice - an aperture or hole opening into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart" |