Or"i*fice (?), n. [F., from L. orificium; os, oris, a mouth + facere to make. See Oral, and Fact.]
A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound.
Etna was bored through the top with a monstrous orifice.
© Webster 1913.